alter Antonyms

pollute stagnate starched sustain tamp taut unmade wear widening wreck wronging plow ahead unrehearsed odorize demote spoil speak preliminary preserve prudish quash remain restive retain roughen ruin scotch scupper sensitize set shatter devalue demulsify be in one form be in the same form be in the same shape be invariable be stable be the same be unalterable be unaltered be unchangeable be unchanging never change remain the same remain unaltered stay in the same shape be immutable be changeless demythologize