Titubate is a rarely used word that means to stumble or waver. The antonyms for titubate could be confidence or stability. When a person is confident about something, they do not titubate. Similarly, stability is the opposite of titubate. If a person is stable, they are firm and steady in their actions and decisions, which prevents them from titubating. Other antonyms for titubate could include walking or moving with ease, where a person is not hesitant or unsure in their movements. Overall, the antonyms for titubate include confidence, stability, ease, and assurance.