TWICE
twice
(adverb) two times; “I called her twice”
doubly, double, twice
(adverb) to double the degree; “she was doubly rewarded”; “his eyes were double bright”
Source: WordNet® 3.1
Etymology
Adverb
twice (not comparable)
Two times.
(usually with "as", of a specified quality) Doubled in quantity, intensity, or degree.
Synonyms
• two times
Source: Wiktionary
Twice, adv. Etym: [OE. twies (where the s is the adverbial ending;
see -wards), twie, AS. twiges, twiwa; akin to twi- (in comp.) two, G.
zwie-, OHG. zwi-, Icel. tvi-, L. bi-, Gr. dvi-, and E. two. See Two.]
1. Two times; once and again.
He twice essayed to cast his son in gold. Dryden.
2. Doubly; in twofold quantity or degree; as, twice the sum; he is
twice as fortunate as his neighbor.
Note: Twice is used in the formation of compounds, mostly self-
explaining; as, twice-horn, twice-conquered, twice-planted, twice-
told, and the like.
Source: Webster’s Unabridged Dictionary 1913 Edition