Synonyms of the word 
UNSMILING → JOYLESS
unsmiling
- adj. Not smiling; serious or grave.
joyless
- adj. without joy; unhappy, sad.
If you are interested in words, visit the following sites :
- wiktionary.org/unsmiling For complete definition of a word
- 1word.ws/unsmiling to play with words, suffixs, prefixs, etc.