10
watchfully(adverb, severely, thoroughly, fully, precisely)
8
attentively(adverb, severely, thoroughly, fully, precisely)
8
carefully(adverb, severely, thoroughly, vigorously, earnestly)
7
heedfully(adverb, severely, thoroughly, fully, precisely)
6
alertly(adverb, attentively)
6
cautiously(adverb, attentively)
6
mindfully(adverb, attentively)
5
observantly(adverb, attentively)
5
providently(adverb, severely, thoroughly, fully, precisely)
5
prudently(adverb, severely, thoroughly, fully, precisely)
5
scrupulously(adverb, severely, thoroughly, fully, precisely)
4
diligently(adverb, vigorously, earnestly, actively, hastily)
4
thoughtfully(adverb, severely, thoroughly, fully, precisely)
4
warily(adverb, severely, thoroughly, fully, precisely)
3
circumspectly(adverb, severely, thoroughly, fully, precisely)
3
concernedly(adverb, severely, thoroughly, fully, precisely)
2
awakely
2
charily
2
conscientiously(adverb, severely, thoroughly, fully, precisely)
2
fastidiously(adverb, severely, thoroughly, fully, precisely)
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APASmart Define. (2013). vigilantly thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/vigilantly/thesaurus/synonyms
ChicagoSmart Define. 2013. "vigilantly thesaurus" https://smartdefine.org/vigilantly/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, vigilantly thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/vigilantly/thesaurus/synonyms>.
MLASmart Define. "vigilantly thesaurus" 17 June 2013. Web. 20 September 2026. <https://smartdefine.org/vigilantly/thesaurus/synonyms>