Meaning : Ask (someone) to marry you.
Example :
He popped the question on Sunday night.
She proposed marriage to the man she had known for only two months.
The old bachelor finally declared himself to the young woman.
Synonyms : offer, pop the question, propose
Declare oneself ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Hindi. Declare oneself ka matlab kya hota hai?