unsure Antonyms

unfaltering strong-minded steadfast single-minded set self-satisfied self-reliant self-confident self-assured secure sanguine resolved resolute purposive purposeful sure unavoidable uncontestable slit trench safety catch policyholder unswerving unwavering safety lock unhesitating unquestionable unmistakable unfailing unequivocal undoubted undoubtable undaunted proven positive definite decisive decided convincer convinced confident conclusive cocky certain avoidless authoritative assured arrogant apodeictic determined doubtless