Answer: suss

AnswerCrossword Clue
SUSS

Puzzle (out)

SUSS

Figure (out)

SUSS

Figure (out), in slang

SUSS
Dope (out)
SUSS
Puzzle (out), in slang
SUSSFigure (out), slangily
SUSSFigure (out), in British slang
SUSSFigure, in British slang
SUSS... out (understand)
SUSSWork (out)
SUSSRealise, with "out"
SUSS-- out (investigate, to a Brit)
SUSSMake (out)