Answer: slightest

AnswerCrossword Clue
SLIGHTESTLeast important
SLIGHTESTLeast.
SLIGHTESTMost insignificant.
slightestSLIGHT, small in size or amount
slightest(esp. of a creative work) Not profound or substantial; somewhat trivial or superficial
slightest(of a person or their build) Not sturdy and strongly built
slightestSmall in degree; inconsiderable