not capable of being matched in quality, value, or degree with something else

比類のない, 比べ物にならない

(of two or more things) not able to exist or work together harmoniously due to fundamental differences or contradictions

互換性がない, 適合しない

not suitable or effective in satisfying the needs of a particular intended function or objective

無能な, 効果がない

highly challenging for someone to understand, such as a concept, language, or situation

理解できない, 理解しにくい

(of a substance) maintaining its volume or density even under external forces

非圧縮性

having an unpleasant and sharp smell or taste, especially causing a burning sensation

刺激的な, 辛辣な

beyond doubt or questioning, often due to its obviousness or undeniable nature

疑いのない, 明白な

to formally put someone in a position or job, especially with an official ceremony

任命する, 導入する

a person who is formally accepted into a particular group, society, or organization

新メンバー, 加入者

to say bad and untrue things about someone, typically to damage their reputation

中傷する, 誹謗する

