MEANING: adverb: Out of necessity.

ETYMOLOGY: From Old French par force (by force), from par (by) + force, from Latin per (by) and fortis (strong). Ultimately from the Indo-European root bhergh- (high), which also gave us iceberg, borough, burg, burglar, fortify, force, belfry, bourgeois, inselberg, and sforzando. Earliest documented use: 1330.

PET FORCE - an army of dogs and cats, plus the occasional bird and fish

APER FORCE - an army of mimics

PAR FORCE - golf holes, usually 300 to 450 yards long

PEE FORCE - what many men lose with age (or prostate enlargement)