Familiar knowledge; a state of being acquainted, or of having intimate or more than slight or superficial knowledge; as, I know the man, but have no acquaintance with him. Sometimes it denotes a more slight knowledge.

A person or persons well known; usually persons we have been accustomed to see and converse with; sometimes, persons more slightly known. Lover and friend has thou put far from me and mine acquaintance into darkness. Psalm 88:18. My acquaintance are estranged from me]ob 19:13. Acquaintances, in the plural is used, as applied to individual persons known; but more generally, acquaintance is used for one or more. Acquaintant, in a like sense, is not used.