mortal

1 mortal /ˈmoɚtl̟/ adjective
1 mortal
/ˈmoɚtl̟/
adjective
Britannica Dictionary definition of MORTAL
1 
: certain to die — opposite 1immortal
2 
a  : causing death : fatal
— often used figuratively
Synonyms see: [1]deadly
b  : possibly causing death
c  : relating to or connected with death — see also mortal remains at remains
3 
always used before a noun : very great or severe

mortal enemy

also mortal foe/rival
: someone you hate very much and for a long time

— mortally

/ˈmoɚtl̟i/ adverb
2 mortal /ˈmoɚtl̟/ noun
plural mortals
2 mortal
/ˈmoɚtl̟/
noun
plural mortals
Britannica Dictionary definition of MORTAL
[count]
: a human being
— often used humorously
— compare 2immortal