52 entries under questionable topic. ×

1
open to question(adjective, uncertain, doubtful, dubious, suspect)
1
pending(open, uncertain, shaky, unclear, unsure)
1
shady(adjective, uncertain, doubtful, shaky, dubious)
1
shaky(adjective, weak, delicate, uncertain, nervous)
1
sneaky(uncertain, shaky, unclear, unlikely)
1
speculative(uncertain, shaky, unclear, unlikely)
1
suspect(adjective, uncertain, shaky, vague, dubious)
1
touch-and-go(uncertain, shaky, unclear, unlikely)
1
touchy(adjective, open, delicate, uncertain, nervous)
1
unconfirmed(uncertain, shaky, unclear, unlikely)
1
unpredictable(uncertain, uneven, unbalanced, unhinged)
1
up for grabs(expression, adjective, idiom, uncertain, nervous)
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APASmart Define. (2015). borderline thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/borderline/thesaurus/synonyms
ChicagoSmart Define. 2015. "borderline thesaurus" https://smartdefine.org/borderline/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, borderline thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/borderline/thesaurus/synonyms>.
MLASmart Define. "borderline thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/borderline/thesaurus/synonyms>