straighten out vs straighten

straighten out and straighten both are verbs.

Word	Noun	Adjective	Verb	Adverb
straighten out	No	No	Yes	No
straighten	No	No	Yes	No

As verbs, straighten out and straighten are synonyms defined as:

Other synonyms of straighten out include clean up, neaten, square away, tidy, tidy up.

As verbs, straighten out and straighten are synonyms defined as:

straighten out (verb)	straighten (verb)
put (things or places) in order	put (things or places) in order
settle or put right	make straight or straighter
change for the better	make straight
make free from confusion or ambiguity; make clear	straighten by unrolling
make straight	straighten up or out; make straight
extricate from entanglement	get up from a sitting or slouching position