knowledge UK /ˈnɒl.ɪdʒ/US /ˈnɑ.lɪdʒ/noun 12verb 1forms 3phrases 1 noun12 •information and understanding that someone has about a subject, a place or a situationHis knowledge of Iceland was limited to what he'd seen on the Travel Channel.He has a lot of knowledge on the Indus Valley Civilization. •Familiarity or understanding of a particular skill, branch of learning etc.Does your friend have any knowledge of hieroglyphs, perchance?A secretary should have a good knowledge of shorthand. •(UK, informal) The deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England. •The total of what is known; all information and products of learning.His library contained the accumulated knowledge of the Greeks and Romans. •Awareness of a particular fact or situation; a state of having been informed or made aware of something.He had always intended to visit him, though to the last always assuring his wife that he should not go; and till the evening after the visit was paid she had no knowledge of it. — 1813 •Intellectual understanding; the state of appreciating truth or information.Knowledge consists in recognizing the difference between good and bad decisions. •Justified true belief •Something that can be known; a branch of learning; a piece of information; a science.he weakened his braines much, as all men doe, who over nicely and greedily will search out those knowledges [translating cognoissances], which hang not for their mowing, nor pertaine unto them. — 1603 •(no longer used) Notice, awareness.Then she fell on her face, and bowed herself to the ground, and said unto him, Why have I found grace in thine eyes, that thou shouldest take knowledge of me, seeing I am a stranger? — 1526 •(no longer used) Sexual intimacy or intercourse (now usually in phrase carnal knowledge).Every time that he had knowledge of her he would leave, either in the bed, or in her cushion-cloth, or by her looking-glass, or in some place where she must needs find it, a piece of money[…]. — 1573 •(no longer used) Information or intelligence about something; notice.Item, if any ship be in danger[…], every man to bear towards her, answering her with one light for a short time, and so to put it out again; thereby to give knowledge that they have seen her token. — 1580 •(no longer used) Acknowledgement. verb1 •(no longer used) To confess as true; to acknowledge.Then went oute to hym Jerusalem, and all Jury, and all the region rounde aboute Jordan, and were baptised of hym in Jordan, knoledging their synnes. — 1526 formsknowledged · knowledging · knowledges Phrases with knowledge safe in the knowledgeConfidently, because one is certain that something relevant to the situation is true.