Answer: tenuous

AnswerCrossword Clue
TENUOUSThin
tenuousthin or slender
tenuousrare
tenuoushaving little strength
tenuouslacking a sound basis
TENUOUSWeak
TENUOUSLacking a sound basis
TENUOUSFlimsy
TENUOUSInsubstantial
TENUOUSFlimsey
TENUOUSUnsubstantial.
TENUOUSSlender.
TENUOUSUnsubstantiated
TENUOUSFlimsy, as an argument
TENUOUSWeak, as a mental grasp
TENUOUSUncertain
TENUOUSShaky