撞着どうちゃく Noun Irregular Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb contradiction
自己撞着じこどうちゃく Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru yojijukugo self-contradiction;self-inconsistency