THESAURUS
straighten
adjust, arrange, clean up, clear up, correct, disentangle, neaten, organize, put in order, rearrange, rectify, reform, rehabilitate, reorganize, resolve, settle, sort out, spruce up,
straighten out, tidy up, uncurl, unkink, unravel, unsnarl, untangle
ROGET THESAURUS
straighten
Straightness
VB
be straight, have no turning, not incline to either side, not bend to either side, not turn to either side, not deviate to either side, go straight, steer for, render straight,
straighten, rectify, set straight, put straight, unbend, unfold, uncurl &c, unravel, unwrap.