Meaning of the word "lack of confidence" in English

What does "lack of confidence" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

lack of confidence

US /læk əv ˈkɑnfɪdəns/
UK /læk əv ˈkɒnfɪdəns/

Phrase

a feeling of not being sure about your own abilities or worth

Example:
His lack of confidence prevented him from speaking in public.
She struggled with a profound lack of confidence after losing her job.