IPA: /ˈdɔːnt.ləs.nəs/
KK: /ˈdɔntləsnəs/
The quality of being fearless and not easily discouraged or intimidated.
Her dauntlessness in the face of danger inspired everyone around her.
Dauntlessness is formed from "daunt" (from Old French *danter*, meaning to intimidate or frighten) and the suffix "-lessness" (meaning without). The word describes a state of being without fear or intimidation.
Think of being 'without' ('-lessness') fear or intimidation ('daunt') — that's what dauntlessness means.