U

blindfold

verb (used with object)

to prevent or occlude sight by covering (the eyes) with a cloth, bandage, or the like; cover the eyes of.
to impair the awareness or clear thinking of: Don’t let their hospitality blindfold you to the true purpose of their invitation.

noun

a cloth or bandage put before the eyes to prevent seeing.

adjective

with the eyes covered: a blindfold test.
rash; unthinking: a blindfold denunciation before knowing the facts.

verb (tr)

to prevent (a person or animal) from seeing by covering (the eyes)
to prevent from perceiving or understanding

noun

a piece of cloth, bandage, etc, used to cover the eyes
any interference to sight

adjective, adverb

having the eyes covered with a cloth or bandage
chess not seeing the board and pieces
rash; inconsiderate

1520s, alteration, by similarity to fold, of blindfelled (early 14c.), past participle of blindfellan “blindfold, cover the eyes (with a bandage, etc.),” also “to strike blind” (c.1200), from Old English (ge)blindfellian “to strike blind,” from blind (adj.) + Anglian gefeollan “to strike down,” as in to fell a tree (see fell (v.)). Related: Blindfolded; blindfolding.

1880, from blindfold (v.).