(a.) Reliant upon one's self; trusting to one's own powers or judgment.

arrogant assured autarchic autarkic autonomous cocksure confident convinced decided determined erect free-spirited freewheeling house-proud hubristic independent individualistic inner-directed neutral nonaligned nonpartisan overconfident oversure overweening persuaded poised pompous positive prideful proud proud as Lucifer proud-blooded proud-looking proud-minded proud-spirited proudful proudhearted purse-proud reassured secure self-assured self-confident self-contained self-dependent self-determined self-directing self-esteeming self-governed self-governing self-important self-respecting self-subsistent self-sufficient self-supporting sovereign stiff-necked sure third-force third-world unafraid undoubting unfaltering unhesitating unwavering