happiness or good fortune

खुशी

English Usage: His hap came when he received the good news.

Hindi Usage: जब उसे अच्छी खबर मिली तो उसकी खुशी आई।

luck or fortune

to happen or occur

to come about

आना

English Usage: Should the opportunity hap, I will take it.

Hindi Usage: यदि मौका आता है, तो मैं इसे लूंगा।