nonsensical
日本語WordNet
incongruous;inviting ridicule; "the absurd excuse that the dog ate his homework"; "that's a cockeyed idea"; "ask a nonsensical question and get a nonsensical answer"; "a contribution so small as to be laughable"; "it is ludicrous to call a cottage a mansion"; "a preposterous attempt to turn back the pages of history"; "her conceited assumption of universal interest in her rather dull children was ridiculous"
having no intelligible meaning; "nonsense syllables"; "a nonsensical jumble of words"
JMdict
AIによる解説
Having no meaning; making no sense; absurd or ridiculous. Used to describe words, ideas, or actions that lack logic.
ライセンス: KeyLang Original
His explanation was completely nonsensical and confused everyone.
彼の説明は全く意味をなさず、皆を混乱させた。
Pronunciation data from ipa-dict (MIT License) based on cmudict-ipa by @lingz