Verb
to maintain [ maintained ; maintained ]
to save [ saved ; saved ]
to squirrel [ squirreled ; squirreled ]
Noun
keeper [pl. keepers]
guardian [pl. guardians]
guard [pl. guards]
custodian [pl. custodians]
preserver [pl. preservers]
preservative [pl. preservatives]
conservator {professions}
preservers [sing. a preserver]
defender [pl. defenders]
sacristan [pl. sacristans]
warden [pl. wardens]