1. diffident, shy, timid, unsure

lacking self-confidence

Example Sentences:
'stood in the doorway diffident and abashed'
'problems that call for bold not timid responses'
'a very unsure young man'

Synonyms

• diffident
• shy
• timid

2. incertain, uncertain, unsure

lacking or indicating lack of confidence or assurance

Example Sentences:
'uncertain of his convictions'
'unsure of himself and his future'
'moving with uncertain (or unsure) steps'
'an uncertain smile'
'touched the ornaments with uncertain fingers'

Synonyms

• incertain
• uncertain

Similar Words

• ambivalent
• doubtful
• dubious
• groping