Synonyms for sentry Found 7 synonyms across 1 meaning for “sentry”. a person employed to keep watch for some anticipated event (noun) lookoutsentinelwatchspotterscoutpicket Explore Related Words Rhymes with sentrySynonyms for lookoutSynonyms for sentinelSynonyms for watchSynonyms for spotterSynonyms for scout Synonym Finder | Rhyme Finder | Poetry Editor