Undeterred
/ˌʌn.dɪˈtɜːrd/
Synonyms
- persistent
- resolute
- tenacious
- unabashed
- unfazed
Slang Meanings
Gritty
She has a gritty attitude; she's undeterred by what others say.
Unshakeable
His unshakeable resolve left him undeterred in the face of challenges.