頓珍漢
I-adj
Noun
1
adjectival nouns or quasi-adjectives (keiyodoshi)noun (common) (futsuumeishi)
word usually written using kana alone
absurdity;contradiction;incoherence;irrelevance
私の祖父は耳が遠いので、よくトンチンカンな返事をする。
My grandfather, being hard of hearing, often makes an irrelevant answer.