Synonyms of the word 
UNASSUMING → MODEST - RETIRING
unassuming
- adj. modest and having no pretensions or ostentation.
modest
- adj. Not bragging or boasting about oneself or one's achievements, unpretentious, humble.
- adj. Small, moderate in size.
- adj. (especially of behaviour or clothing) Avoiding being sexually suggestive.
retiring
- adj. Shy, introverted, liking privacy and seclusion.
- adj. About to retire from work.
- v. present participle of retire.
- n. retirement.
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