Enos = "mortal man"
derivation: of Hebrew origin (0583)
http://bible.crosswalk.com/Lexicons/Greek/grk.cgi?number=1800&version=kjv

(0583)
Enos = "man"
derivation: the same as (0582)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=583&version=kjv

(0582)
1] man, mortal man, person, mankind
   1.a] of an individual
   1.b] men (collective)
   1.c] man, mankind
derivation: from (0605)
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=582&version=kjv

(0605)
1] to be weak, sick, frail
   1.a] (Qal)
       1.a.1] to be incurable
       1.a.2] to be sick
       1.a.3] desperate, incurable, desperately wicked, woeful, very sick (pass participle) (metaphorically.)
   1.b] (Niphal) to be sick
http://bible.crosswalk.com/Lexicons/Hebrew/heb.cgi?number=605&version=kjv

A link to each occurrence of this word in the homepage:
1] Enos