faint (adj.) Look up faint at Dictionary.com
c.1300, "enfeebled; wearied, exhausted,", from Old French feint "soft, weak, sluggish, indolent, cowardly," past participle of feindre "hesitate, falter, be indolent, show weakness, avoid one's duty by pretending" (see feign). Also from c.1300 as "deceitful; unreliable; false." Meaning "wanting in spirit or courage, cowardly" (a sense now mostly encountered in faint-hearted) is from early 14c. From early 15c. of actions, functions, colors, etc., "weak, feeble, poor." Meaning "producing a feeble impression upon the senses" is from 1650s.
faint (v.) Look up faint at Dictionary.com
c.1300, "grow weak, become enfeebled," also "lack courage or spirit, be faint-hearted," and "to pretend, feign;" from faint (adj.). Sense of "swoon, lose consciousness" is from c.1400. Also used in Middle English of the fading of colors, flowers, etc. Related: Fainted; fainting. For Chaucer and Shakespeare, also a transitive verb ("It faints me").
faint (n.) Look up faint at Dictionary.com
c.1300, "faintness, faint-heartedness," from faint (adj.). From 1808 as "a swoon."