Ambitious and uncompromising, say

TYPEA

"Hint: This personality classification is often associated with high stress and competitiveness. (This hint points toward the well-known "Type A" personality trait without directly stating it, making it easier than the original clue while still requiring some deduction.)"

The clue "Ambitious and uncompromising, say" leads to the answer "TYPEA" through the following reasoning: 1. Definition & Wordplay: The clue describes a personality type that is ambitious and uncompromising.