- full (adj.)
- Old English full "containing all that can be received; having eaten or drunk to repletion; filled; perfect, entire, utter," from Proto-Germanic *fulla- "full" (cognates: Old Saxon full, Old Frisian ful, Dutch vol, Old High German fol, German voll, Old Norse fullr, Gothic fulls), from PIE *pele- (1) "to fill" (see poly-). Related: Fuller; fullest.
The adverb is Old English ful "very, fully, entirely, completely" and was common in Middle English (full well, full many, etc.); sense of "quite, exactly, precisely" is from 1580s. Full moon, one with its whole disc illuminated, was Old English fulles monan; first record of full-blood in reference to racial purity is from 1812. Full house is 1710 in the theatrical sense, 1887 in the poker sense (three of a kind and a pair, earlier full-hand, 1850). Full-dress (adj.) "appropriate to a formal occasion" is from 1761, from the noun phrase.
- full (v.)
- "to tread or beat cloth to cleanse or thicken it," late 14c., from Old French foler, fouler "trample on, press," from Latin fullo, which is possibly from PIE *bhel- (2) "to blow, swell" (see foil (v.)). Or perhaps the Middle English word can be derived from Old English agent-noun fullere, which probably was formed from Latin fullo with a native ending.
- full (n.)
- early 14c., from Old English fyllo, fyllu "fullness (of food), satiety;" also from full (adj.).