thresh vs thresh about

thresh and thresh about both are verbs.

Word	Noun	Adjective	Verb	Adverb
thresh	No	No	Yes	No
thresh about	No	No	Yes	No

As verbs, thresh and thresh about are synonyms defined as:

Other synonyms of thresh include convulse, jactitate, slash, thrash, thrash about, toss.

thresh (verb)	thresh about (verb)
give a thrashing to; beat hard	move or stir about violently
beat the seeds out of a grain
move or stir about violently
move like a flail; thresh about