IPA: /ɪnˈtrɛpɪd/
KK: /ɪnˈtrɛpɪd/
Showing great bravery and fearlessness, especially in difficult situations.
The intrepid explorer ventured into the uncharted jungle without any fear.
Intrepid is formed from "in-" (meaning not) and "trepidus" (from Latin, meaning trembling or afraid). The word describes someone who is not afraid or trembling, hence fearless or adventurous.
Think of someone who is 'not' ('in-') 'trembling' ('trepidus') in the face of danger — that's why intrepid means fearless.