adventitious/एैड्वेन्टिशॅस/adj.
not expected or planned.
adversary/ऐडवॅरसेरि/noun
an enemy.
adversity/अड्वरसॅटि/noun
a very difficult or unlucky situation or event.
aegis/ईजिस/noun
[IDIOM] under the aegis of sb/sth = with the protection or support of sb/sth.
aeon/ईअन/noun