自転車Bicycle自動車Automobile自分Oneself自由freedom自殺suicide自身by oneself自動automatic自慢pride不自由discomfort各自individual自衛self-defense自習self-study自治self-government自覚self-conscious自我self自己self自在freely自主independence自首surrender自信self-confidence自尊心self-respect自転rotation自動詞intransitive verb (no direct obj)自立independence独自original