noun

1. A sheer curtain or fabric.

   “Use sheers to maximize natural light.”

adjective

1. Very thin or transparent.

   “Her light, sheer dress caught everyone’s attention.”

2. Pure in composition; unmixed; unadulterated.

3. (by extension) Downright; complete; pure.

   “I think it is sheer genius to invent such a thing.”

Synonyms: downright, mere, pure, unmitigated, pure, undiluted, perpendicular, steep

adverb

1. Clean; quite; at once.