to confound is a form of:

Unconcerned



adjective
1.
(បច្ចេកទេស) គ្មានបារម្ភ, មិនទាក់ទង
ENGLISH MEANING
adjective
1.
Not concerned; not anxious or solicitous; easy in mind; carelessly secure; indifferent; as, to be unconcerned at what has happened; to be unconcerned about the future.