Synonyms|131Antonyms|3|Broader|4Narrower|1Related|17
1
signal flag
1
signal gong
1
signal gun
1
signal lamp
1
signal light
1
signal mast
1
signal post
1
signal rocket
1
signal shot
1
signal siren
1
signal tower
1
skull and crossbones(expression, idiom)
1
spar buoy
1
stop-and-go light
1
storm petrel
1
stormy petrel
1
symptom
1
thumbs down(noun, expression, disapproval, rejection, striction)
1
thundercloud
1
thunderhead
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APASmart Define. (2015). red light thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/red_light/thesaurus/synonyms
ChicagoSmart Define. 2015. "red light thesaurus" https://smartdefine.org/red_light/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, red light thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/red_light/thesaurus/synonyms>.
MLASmart Define. "red light thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/red_light/thesaurus/synonyms>