Down-to-earth Roman tunic perhaps (10)
I believe the answer is:
unromantic
'down-to-earth' is the definition.
(thesaurus)
'roman tunic perhaps' is the wordplay.
'perhaps' indicates anagramming the letters.
'roman'+'tunic'='romantunic'
'romantunic' is an anagram of 'UNROMANTIC'.
(Other definitions for unromantic that I've seen before include "displaying no outward affection" , "without affection?" , "Hard-headed" , "Not loving or amorous" , "Pragmatic" .)