holý nesmysl — sheer nonsense
Co to plácáš za nesmysly? — What nonsense are you talking?
| Case | Singular | Plural |
|---|---|---|
| nom | nesmysl | nesmysly |
| gen | nesmyslu | nesmyslů |
| dat | nesmyslu | nesmyslům |
| acc | nesmysl | nesmysly |
| voc | nesmysle | nesmysly |
| loc | nesmyslu | nesmyslech |
| instr | nesmyslem | nesmysly |