6
suggest(verb, order, mean, show, direct)
6
unforgettable(adjective, great, extraordinary, importance, important)
6
unusual(adjective, solid, extraordinary, new, wonderful)
6
weighty(adjective, solid, extraordinary, importance, unusual)
5
accost(verb, welcome, indicate, announce, introduce)
5
banner(noun, indication)
5
designate(verb, make, mean, show, mark)
5
distinctive(adjective, extraordinary, outstanding, eminent, influential)
5
emblem(noun, indication)
5
flash(noun, verb, mark, light, note)
5
forewarning(noun, feeling, sign, alert, warning)
5
greet(verb, move, acknowledge, welcome, bend)
5
horn(noun, alert, caution, alarm, warning)
5
indicator(noun, mark, light, sign, indication)
5
individual(adjective, extraordinary, unusual, exceptional, outstanding)
5
light(noun, mark, sign, indication, evidence)
5
lighthouse(noun, indication, warning)
5
major(adjective, important, wonderful, exceptional, marvelous)
5
mean(verb, make, show, mark, direct)
5
noble(adjective, great, solid, powerful, famous)
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APASmart Define. (2016). signal thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/signal/thesaurus/synonyms
ChicagoSmart Define. 2016. "signal thesaurus" https://smartdefine.org/signal/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, signal thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/signal/thesaurus/synonyms>.
MLASmart Define. "signal thesaurus" 1 March 2016. Web. 27 September 2026. <https://smartdefine.org/signal/thesaurus/synonyms>