Third-person singular simple present indicative form of know / (nonstandard) All persons, singular and plural, present form of know.

plural of know

Informed, aware.

plural of knowing

To be aware of (someone's or something's) existence, but little or nothing beyond that. / To know about a specific person by reputation without having met them.

(especially in the past) To not have the required information.

present participle of know of

Third-person singular simple present indicative form of know of

(informal, humorous) Used to signify a reference or allusion to something that is only understood by certain groups of people.

A rhetorical question asked to show that the person asking it neither knows the answer nor knows who might.