Synonyms of alter in English:

alter


See definition of alter

verb

1‘he altered his theories a number of times’

SYNONYMS
change, make changes to, make different, make alterations to, adjust, make adjustments to, adapt, amend, improve, modify, convert, revise, recast, reform, reshape, refashion, redesign, restyle, revamp, rework, remake, remodel, remould, redo, reconstruct, reorganize, reorder, refine, reorient, reorientate, vary, transform, transfigure, transmute, evolve
customize, tailor
informal tweak
technical permute
ANTONYMS

preserve

2‘the state of affairs has altered’

SYNONYMS
change, become different, undergo a change, undergo a sea change, turn, adjust, adapt, convert, vary, transform, metamorphose, evolve, improve
ANTONYMS

stay the same