Antonyms for determinedness, which refers to the quality of being resolute or firm in one's purpose or goals, may include indecisiveness, hesitation, vacillation, inconsistency, and uncertainty. These terms suggest a lack of commitment or clarity in one's intentions or actions. Antonyms may also include words that connote an opposite emotional state or attitude, such as doubt, apathy, lethargy, or complacency. Overall, antonyms for determinedness imply a lack of focus, motivation, or conviction, providing a contrast to the steadfastness and determination that characterize this trait.