v. Simple past tense and past participle of acquaint.
the GNU version of the Collaborative International Dictionary of English
adj. Personally known; familiar. See To be acquainted with, under acquaint, v. t.
The Century Dictionary and Cyclopedia
Having acquaintance; informed; having personal knowledge.
Known; familiarly known; not new.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. having fair knowledge of
Word Usage
"Henri de Lubac and Karol Wojtyla, who later became Pope, were already acquainted from the days of the Second Vatican Council and held one another in high esteem."