wilier is a form of:

Wily



adjective
1.
(បច្ចេកទេស) ដែលពោពេញដោយឧបាយកល, ឆ្លាត
ENGLISH MEANING
adjective
1.
Full of wiles, tricks, or stratagems; using craft or stratagem to accomplish a purpose; mischievously artful; subtle.