1
janitorial
1
keep(verb, support, cover, secure, defend)
1
keep safe(verb, expression, support, cover, keep)
1
lifeguard
1
lighthouse
1
look after(verb, expression, phrasal verb, support, cover)
1
lookout station(expression, idiom)
1
marker
1
minder
1
mole
1
nurse(noun, guard, safeguard, champion, protector)
1
observance(noun, case, watch, overlook, guard)
1
observation(noun, case, watch, overlook, guard)
1
observer
1
outlook(noun, case, watch, guard, post)
1
overseer(noun, guard, safeguard, champion, sponsor)
1
paladin(noun, guard, safeguard, champion, sponsor)
1
peeler
1
piquet
1
plainclothesman
10 years ago|14k views|share |citing 
APASmart Define. (2016). sentinel thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/sentinel/thesaurus/synonyms
ChicagoSmart Define. 2016. "sentinel thesaurus" https://smartdefine.org/sentinel/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, sentinel thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/sentinel/thesaurus/synonyms>.
MLASmart Define. "sentinel thesaurus" 20 March 2016. Web. 23 September 2026. <https://smartdefine.org/sentinel/thesaurus/synonyms>