English · noun · River

knowledge

/ˈnɒlɪdʒ/

It begins as acknowledgment of a superior. The fact of knowing comes two centuries later.

English knowledge first meant acknowledgment. Early 12c. cnawlece is acknowledgment of a superior, honor, worship. Only from the late 14c. does it mean the capacity for knowing, the fact of knowing, information, learning, and an organized body of facts or teachings. The first half is the old Germanic verb know, from the root *gno- that also gives Greek γνῶσις and Latin (g)noscere. The second half is obscure. A modern full reduction of KNOWLEDGE lands on 42. That is a found observation, after the language. Method named: full reduction.

Morphology First element, know. Old English cnawan, a class VII strong verb (past cneow, past participle cnawen): to perceive a thing to be identical with another, to be able to distinguish, to perceive or understand as a fact or truth rather than believe, to know how. From Proto-Germanic *knew-, from the PIE root *gno- ‘to know.’ Established for the verb. Second element: obscure. Perhaps from Scandinavian, and cognate with the -lock ‘action, process’ in wedlock (Old English wedlac, ‘actions or proceedings, practice’). Proposed. The origin of the second element is not settled. Earliest English noun: early 12c. cnawlece. Established. Middle English knoulechen, about 1200, meant acknowledge, later ‘find out about; recognize,’ and about 1300 ‘to have sexual intercourse with.’ Established. acknowledge, late 15c., blends Middle English aknow (Old English oncnawan, ‘understand, come to recognize’) with knowlechen. Etymonline quotes the OED (1989): ‘By 16th c. the earlier vbs. knowledge and a(c)know ... were obs., and acknowledge took their place.’ The -c- in acknowledge is unetymological. Etymonline offers a hedged explanation, that it perhaps preserved the old kn- sound. That explanation is Proposed.

Proto-Indo-European
root of the verb
Established
*gno-^2,5
To know. This is the root of the Germanic verb, not a path through Greek or Latin. γιγνώσκειν and γνῶσις, and Latin gnoscere, are cognates of the root. They are not the descent of the English noun.
Proto-Germanic
the verb
Established
*knew-²
The Germanic verb that becomes Old English cnawan.
Old English
class VII strong verb
Established
cnawan²
To perceive a thing to be identical with another. To distinguish. To perceive or understand as a fact or truth, rather than believe. To know how. Past cneow, past participle cnawen.
Middle English
early 12c.
Established
cnawlece¹
Acknowledgment of a superior, honor, worship. The noun is know plus a second element.
The form is established. The second element is not. Perhaps Scandinavian, and cognate with -lock ‘action, process’ in wedlock, Old English wedlac. Proposed. Not a lock on what is known.
Middle English
c. 1200
Established
knoulechen¹
The verb: to acknowledge. Later, to find out about, to recognize. About 1300, to have sexual intercourse with.
Modern English
late 14c. on
Established
knowledge^1,3
Capacity, fact, information, learning, and an organized body of facts or teachings. The late 15c. verb acknowledge replaces the earlier verbs knowledge and a(c)know.

Senses through time

Early 12c.
Acknowledgment of a superior, honor, worship. The word begins in recognizing someone, not in storing facts.¹
Established
Late 14c.
The capacity for knowing, understanding, familiarity. The fact or condition of knowing, awareness of a fact. News, notice, information. Learning. An organized body of facts or teachings.¹
Established
c. 1400, historical
A carnal sense, beside the verb know, ‘to have sexual intercourse with,’ from about 1200, from the Old Testament (Genesis iv.1). Historical sense.^1,2
Established
One verb
English keeps one verb, know, where other languages split the work. German wissen, kennen, erkennen. French connaître, savoir. Latin scire, cognoscere. Old English also had witan, from the PIE root *weid-, ‘to see.’^2,4
Established

Semantic change

acknowledgment of a superior
early 12c. to the late 14c.
what a person holds in mind
About two centuries. The first sense is recognition of someone. The later senses are capacity, fact, information, learning, and a body of teachings. Established¹
the verbs knowledge and a(c)know
late 15c., settled by the 16th c.
acknowledge
A blend of Middle English aknow and knowlechen. The extra -c- is unetymological. The sound-preserving explanation is Proposed, not Established. Established^3,1

Cognates and neighbors

Resemblance is not lineage. Translation is not descent.

Greek
γιγνώσκειν⁵
To know. A cognate of the root *gno-. Not a parent of English knowledge.
Cognate
Greek
γνῶσις⁵
Knowledge, inquiry. Same root. Not this English noun, and not a synonym to flatten into it.
Cognate
Latin
gnoscere⁵
To get to know. Cognate of the root. Cognition, notice, notion, and noble belong to this Latin family, not to the English noun’s morphology.
Cognate
Sanskrit
jna-⁵
Know. Cognate of the root. Not a source of the English noun.
Cognate
Old Church Slavonic
znati⁵
To know. Cognate of the root.
Cognate
Russian
znat⁵
To know. Cognate of the root.
Cognate
German
kennen^5,2
To know a person or a thing. Cognate through Germanic. German still splits this from wissen.
Cognate
English
can⁵
Same *gno- family. Not a child of the noun knowledge.
Cognate
English
ken⁵
Same family. Range of sight, and later to know.
Cognate
English
cunning⁵
Same family. Skill, then a darker sense. Not this noun.
Cognate
English
uncouth⁵
Same family. Originally unknown, then awkward.
Cognate
Old English
witan^4,2
To know, from PIE *weid-, ‘to see.’ A second English verb, beside cnawan. Not the source of knowledge.
Parallel formation
German
wissen²
To know a fact. The split English does not make. Not a child of knowledge.
Parallel formation
French
connaître²
To know a person or a thing. French also keeps savoir for a fact or a skill.
Parallel formation
Latin
scire²
To know, beside cognoscere. The Latin split. Not the morphology of this noun.
Parallel formation
English
lock^1,6
Folk association. Knowledge is not a lock on what is known. Etymonline notes that the spelling wedlock itself was altered by folk association with lock.
False cognate

Read the text

Since Knowledge is but sorrow’s Spy, / It is not safe to know.¹
Literary attestation, as Etymonline records it under knowledge. Not an etymology.

Two shores

Constellation

Elon Musk

How do civilizations build knowledge?

Civilizations · · Primary source⁷

Civilizations public home. The door draws the 2015 semantic tree, trunk and big branches before leaves, and notes that Sid Meier’s Civilization (1991) locks Literature behind Writing, and the Great Library behind Literature. Constellation appearance, not an etymology. Know With is a neighbor door, not a source for this word. Exegesis owns what ‘semantic tree’ meant in the January 2015 reply. The 42 Index owns Knowledge 42. Neighbor plates hold understand, grok, consciousness, question, and meaning. This page does not copy their rows.

InterpretationThe world asks how a civilization builds an organized body of facts. LEXIS owns where the English word came from.

It is important to view knowledge as sort of a semantic tree. Make sure you understand the fundamental principles, ie the trunk and big branches, before you get into the leaves/details or there is nothing for them to hang on to.

January 2015 · Primary source^8,7

Reddit AMA, January 2015, on how he learns. The sentence is the one already printed on the Civilizations home, which cites this URL. The Reddit page did not return the comment body in this sitting.

InterpretationInterpretation. His usage keeps the late-14c. senses, an organized body of facts and teachings, and adds a structure: a tree you must grow from the trunk. The word’s first English sense, acknowledgment of a superior, is not in this sentence. He does not comment on the etymology.

Elon Musk

We need to preserve and make accessible as much knowledge as possible. So much has been lost over the past 5000 years.

26 April 2024 · Primary source⁹

Post on X, 26 April 2024. Primary text checked this sitting.

InterpretationInterpretation. The late-14c. body of teachings, plus a duty to preserve it. Not an etymology.

Keep books and historical media safe. SpaceX will put copies of knowledge in space an on the Moon and Mars.

12 April 2026 UTC · Primary source¹⁰

Post on X, 12 April 2026 UTC, the evening of 11 April in Chicago. Quoted as posted, including ‘an.’ Primary text checked this sitting.

InterpretationInterpretation. The same body of teachings, and a duty to put copies off-world. Not an etymology. The first English sense is not in this post.

The 42 Index

The Index owns the 42 census. These are doors, not copies. The Index shares questions and sources. It does not share the page.

Knowledge 42
Word / phrase cipher result · Established
Full reduction of modern English KNOWLEDGE is 42. Found, not historically intended in cnawlece or Old English cnawan. The Index owns the census object. LEXIS records the observation. CIPHER owns the method.

Follow the number

Numerical analysis comes after language. Historical systems and modern English mappings are labeled. Misses are kept. Further calculation lives at CIPHER.

42 · modern mapping · 96 · miss

42
Modern mapping · modernly constructed
Full reduction
K2+N5+O6+W5+L3+E5+D4+G7+E5. Method named: full reduction. A=1 through I=9, then the cycle repeats.
42. A hit, and a modern mapping. Found, not historically intended in cnawlece or in Old English cnawan. The same arithmetic is already shown on Civilizations. CIPHER owns the method. The Index owns the Knowledge 42 census claim. LEXIS records the observation.
96
Modern mapping · miss
English ordinal
K11+N14+O15+W23+L12+E5+D4+G7+E5. Method named: English ordinal. A=1 through Z=26.
96. A miss for 42. The sum is of the modern English spelling.
39
Modern mapping · miss
English reverse reduction
K7+N4+O3+W4+L6+E4+D5+G2+E4. Method named: English reverse reduction. Reverse ordinal, then the digital root of each letter.
39. A miss. Not the full reduction, and not a historical value.
18
Modern mapping · miss
Full reduction of KNOW
K2+N5+O6+W5. Method named: full reduction, on the verb alone.
18. A miss. The root does not carry the 42. No English cipher is run here on Old English, Middle English, Greek, or Sanskrit.

Ask the next question

Why did English first use this word for acknowledging a superior, and only two centuries later for what a person holds in mind?
English kept one verb, know, where German, French, and Latin each need two. What does a language lose or gain by not splitting knowing a fact from knowing a person?
If knowledge is a tree that must grow from the trunk, what happens to leaves when the trunk is lost, as in “So much has been lost over the past 5000 years”?

Neighbors

Civilizations: Asks how civilizations build knowledge. Not this etymology.
Know With: A neighbor door. Not a source for the word.
Knowledge 42: The Index owns the census object. LEXIS does not copy the row.
CIPHER: Owns the full-reduction method. LEXIS only records the labeled sums.
Semantic tree: Exegesis owns the reading of the January 2015 reply. This page does not copy those notes.

Notes

Last verified 2026-10-07