bitterns is a form of:

Reverential



adjective
1.
(reverent, of reverence) ដែលធ្វើដោយគរុការភាព, reve rential bow ដែលធ្វើសិក្ការៈ
ENGLISH MEANING
adjective
1.
Proceeding from, or expressing, reverence; having a reverent quality; reverent; as, reverential fear or awe.