(transitive) to sign with one's initials, esp to indicate approval; endorse
Derived Forms
initialer, initialler, noun initially, adverb
Word Origin
C16: from Latin initiālis of the beginning, from initium beginning, literally: an entering upon, from inīre to go in, from in-² + īre to go
Word Origin and History for initial
adj.
1520s, "of or pertaining to a beginning," from Middle French initial or directly from Latin initialis "initial, incipient," from initium "a beginning, an entrance," from past participle stem of inire "to go into, enter upon, begin," from in- "into, in" (see in- (2)) + ire "to go" (see ion).
v.
"to mark or sign with initials," 1864, American English, from initial (n.). Related: Initialed; initialing.
n.
"initial letter of a name or surname," 1620s, from initial (adj.) in a specialized sense "standing at the beginning of a word, sentence, etc."