from The American Heritage® Dictionary of the English Language, 4th Edition
- Completely; excessively, especially with destructive or detrimental effect: forworn.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- Meaning "far", "away"; "from", "out" e.g. forbid, forget, forsay; forbear, fordeem.
- Meaning "completely", "to the fullest extent" e.g. fordo; superseded by combinations with "up" in senses where no upward movement is involved, e.g. forgive = give up (one's offenses), forgather = "gather up", forbeat = "beat up", etc.
- Very; excessively.
from the GNU version of the Collaborative International Dictionary of English
- A prefix to verbs, having usually the force of a negative or privative. It often implies also loss, detriment, or destruction, and sometimes it is intensive, meaning utterly, quite thoroughly, as in forbathe.
Middle English, from Old English; see per1 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English for-, vor-, from Old English for-, fer-, fær-, fyr- ("far, away, completely", prefix), from the merger of Proto-Germanic *fra- ("away, away from"; see fro, from) and *fur-, *far- (“through, completely, fully”), from Proto-Indo-European *pro-, *per-, *pr-. Cognate with Scots for-, West Frisian fer-, for-, Dutch ver-, German ver-, Swedish för-, Danish for-, Norwegian for-, Latin per-. More at for. (Wiktionary)