unassertive
adjective
[ ʌnəˈsəːtɪv ]
• (of a person) not having or showing a confident and forceful personality.
• "his bland and unassertive personal style"
Similar:
passive,
retiring,
submissive,
unassuming,
self-effacing,
modest,
humble,
meek,
unconfident,
unforthcoming,
diffident,
shy,
timid,
timorous,
shrinking,
hesitant,
insecure,
unsure,
mousy,
