Slier

14 clues
More wily
More sharp
More slick
More shrewd
More clever
More crafty
More artful
More cunning
More evasive
More devious
More ingenious
More conniving
Harder to outwit
More underhanded
Similar answers:
Abcislands
Aberdeenterrier
Ablewasier
Abrahamslincoln
Abritishsoldier
Abugslife
Abzugslife
Acatslife
Accesslog
Aceuponessleeve
Achapsjokeslike
Achier
Achierarchie
Achoruslien
Achorusline
Acier
Acierate
Acierater
Aciers
Aclorisline