SQUINTEST
Scrabble letter values: S1Q10U1I1N1T1E1S1T1 = 18
Definition
SQUINTEST is the superlative of SQUINT.
adjective SQUINT: (used especially of glances) directed to one side with or as if with doubt or suspicion or envy.
Synonyms of SQUINT: askance, askant, asquint, squint-eyed, squinty, sidelong