To be acquainted with, to be possessed of personal knowledge of; to be cognizant of; to be more or less familiar with; to be on terms of social intercourse with.
Syn. -- To inform; apprise; communicate; advise.
Ac*quaint"a*ble (&?;), a. [Cf. OF. acointable]. Easy to be acquainted with; affable. [Obs.] Rom. of R.
Ac*quaint"ance (&?;), n. [OE. aqueintance, OF. acointance, fr. acointier. See Acquaint.] 1. A state of being acquainted, or of having intimate, or more than slight or superficial, knowledge; personal knowledge gained by intercourse short of that of friendship or intimacy; as, I know the man; but have no acquaintance with him.
Contract no friendship, or even acquaintance, with a guileful man.
Sir W. Jones.