nonsensical /-sensˈ/ adjective

1. Without sense
2. Absurd
3. (of a word, syllable, etc) consisting of an arbitrary group of sounds and having no meaning

nonsensicality /non-sens-i-kalˈi-ti/ or nonsensˈicalness noun

nonsensˈically adverb

nonsense verse noun

Verse deliberately written to convey an absurd meaning, or without obvious meaning at all

nonsense word noun

A deliberately meaningless word

no-nonsense see under no²