capable of or tending to change in form or quality or nature; "a mutable substance"; "the mutable ways of fortune"; "mutable weather patterns"; "a mutable foreign policy"
enter or assume a certain state or condition; "He became annoyed when he heard the bad news"; "It must be getting more serious"; "her face went red with anger"; "She went into ecstasy"; "Get going!"
come into existence; "What becomes has duration"
undergo a change or development; "The water turned into ice"; "Her former friend became her worst enemy"; "He turned traitor"