squeamish (adj.)

late 14c., variant (with -ish) of squoymous "disdainful, fastidious" (early 14c.), from Anglo-French escoymous, which is of unknown origin. Related: Squeamishly; squeamishness.

He was somdel squaymous
Of fartyng, and of speche daungerous
[Chaucer, "Miller's Tale," c. 1386]

Others are reading

Definitions of squeamish from WordNet

squeamish (adj.)
excessively fastidious and easily disgusted;
so squeamish he would only touch the toilet handle with his elbow
Synonyms: dainty / nice / overnice / prissy