Antonyms for the phrase "collect oneself" can include words like scatter, disperse, fall apart, lose oneself, and lose control. These antonyms signify a contrasting action to that of collecting oneself, which implies a focus on regaining composure and control over one's thoughts and emotions. Instead, the antonyms suggest a state of confusion, chaos, or lack of control over one's mental and emotional states. Knowing these antonyms can help expand your vocabulary and better equip you in expressing your thoughts and emotions.