‘Have they arrived yet?’ ‘I don’t know.’
If you don’t know the answer, just guess.
How do you know my name?
I knew she wasn’t really happy.
I don’t know where the money’s coming from.
I need to know if she’s made a decision yet.
I don’t know anything about it.
We know for a fact that the fire was started deliberately.
We know from experience that unemployment makes the problem worse.
Synonyms or related words for this meaning of know:
realize, have heard of, be reliably informed/assured, recognize, possess...
moreNone of us really knew what had gone wrong.
The ancient city is known to have existed in the region.
The pilots were experienced and known to be very competent.
Some drugs are known to cause damage to unborn children.
It was the only comfort and warmth she had ever known.
I’ve never known her to make a joke.

| present tense | |
| I/you/we/they | know from |
| he/she/it | knows from |
| present participle | knowing from |
| past tense | knew from |
| past participle | known from |

| present tense | |
| I/you/we/they | know of |
| he/she/it | knows of |
| present participle | knowing of |
| past tense | knew of |
| past participle | known of |
I only know of one case in which this has happened.
Do you know of anyone who’s looking for a new car?
Synonyms or related words for this meaning of know:
realize, have heard of, be reliably informed/assured, recognize, possess...
moreThis is the British English definition of know. View American English definition of know
staying at the home of another person, especially a stranger, for free
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