Servile (6)
'servile' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for menial that I've seen before include "(Of work) unskilled" , "Demeaning" , "(Of job) low in prestige" , "A drudge" , "Humble - servant" .)
(Other definitions for abject that I've seen before include "Obsequious or grovelling, as apology may be" , "Extremely humble" , "Sorry" , "Deeply miserable" , "Forlorn - humiliated" .)