Synonyms of maintaining

1 Syllable
keep, guard, save
2 Syllables
support, renew, repair, retain, control, prolong, protect, uphold, supply, sustain
3 Syllables
advance, continuing, manage, conserve, nurture, tenanting, demurrer, provide, occupying, continue, finance, long-lived, preserve
4 Syllables
continuations, operating, continuation, persevere, perdurable, perpetuate, cultivate