fainted / feinted are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
fainted: (verb) pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain.
feinted: (verb) deceive by a mock action.
fainted: f·EY·n·t·ih·d
feinted: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)