verb
-ens; -ened; -ening
to make (something) straight or to become straight [+ obj]
[+ obj] :to make (something) organized or tidy :to put (something) in order - usually + out or up
straighten out
[phrasal verb]
straighten out (something) or straighten (something) out :to deal with (something) successfully
a straighten out or straighten out (something) or straighten (something) out :to improve in behavior or condition
b straighten (someone) out or straighten out (someone) :to improve the behavior of (someone)
straighten up
[phrasal verb]
to move your body to an upright position
US :to improve in behavior