Formal/Strong:
* Èyí jẹ́ àsọtẹ́lẹ̀ (E-yi je a-so-te-le) - This is a lie/fabrication.
* Èyí kò ní ìmọ̀ràn (E-yi ko ni i-mo-ran) - This is not reasonable/logical.
* Èyí jẹ́ ìwà ìbàjẹ́ (E-yi je i-wa i-ba-je) - This is foolish/stupid.
Informal/More Casual:
* Èyí jẹ́ ojúgbàgba (E-yi je o-ju-gba-gba) - This is rubbish/nonsense.
* Èyí jẹ́ ìtàn ìṣẹ́ (E-yi je i-tan i-se) - This is a story/made-up.
* Èyí jẹ́ àsọtẹ́lẹ̀ àìnítò (E-yi je a-so-te-le ai-ni-to) - This is a blatant lie.
The best option depends on the context and the speaker's intention.