flukes is a form of:

Tremulous



adjective
1.
(Trembling, vibrating, quivering, timorous, fearful, timid) ដែលញ័រ, ដែលរញ្ជួយ, ដែលញាក់ (ខ្លាចខ្លាំង), ដែលញ័ររលាក់សំឡេង
Example: Tremulous voice, tremulous handwriting.
ENGLISH MEANING
adjective
1.
Affected with fear or timidity; trembling.
2.
Shaking; shivering; quivering; as, a tremulous limb; a tremulous motion of the hand or the lips; the tremulous leaf of the poplar.