Another word for maintaining is care for or keep up.
Main Entry: Maintain
Part of Speech: Verb
Definition: Care for, keep up
Synonyms: Advance, carry on, conserve, continue, control, cultivate, finance, go on with, guard, keep, keep going, look after, manage, nurture, perpetuate, persevere, preserve, prolong, protect, provide, renew, repair, retain, save, supply, support, sustain, take care of, uphold
Antonyms: Ignore, neglect
Main Entry: Maintain
Part of Speech: Verb
Definition: Assert, claim; argue for
Synonyms: Advocate, affirm, allege, asseverate, attest, aver, avow, back, champion, contend, correct, declare, defend, emphasize, fight for, hold, insist, justify, persist, plead for, profess, protest, rectify, report, right, say, stand by, state, stress, uphold, vindicate
Antonyms: Condemn, desert, discard, forget
hope this helps :)
Part of Speech: Verb
Definition: Care for, keep up
Synonyms: Advance, carry on, conserve, continue, control, cultivate, finance, go on with, guard, keep, keep going, look after, manage, nurture, perpetuate, persevere, preserve, prolong, protect, provide, renew, repair, retain, save, supply, support, sustain, take care of, uphold
Antonyms: Ignore, neglect
Main Entry: Maintain
Part of Speech: Verb
Definition: Assert, claim; argue for
Synonyms: Advocate, affirm, allege, asseverate, attest, aver, avow, back, champion, contend, correct, declare, defend, emphasize, fight for, hold, insist, justify, persist, plead for, profess, protest, rectify, report, right, say, stand by, state, stress, uphold, vindicate
Antonyms: Condemn, desert, discard, forget
hope this helps :)