This phrase means "it is as if" or "it is like." You use it when something looks or feels very similar to something else, but it is not actually that thing.
Verb [dictionary form] + かのようだPrimary
Verb [た-form] + かのようだ
い-Adjective + かのようだ
な-Adjective + である + かのようだ
Noun + である + かのようだ
This phrase means "it is as if" or "it is like." You use it when something looks or feels very similar to something else, but it is not actually that thing.
目の前の光景は、まるで夢であるかのようだ。
The scene before my eyes is as if it were a dream.
彼はその事件について全てを知っていたかのようだった。
It was as if he knew everything about that incident.
彼女は周りの騒音が全く聞こえていないかのようだ。
It's as if she cannot hear the surrounding noise at all.
一日が終わると、まるで戦争から帰ってきたかのような疲労感に襲われる。
When the day ends, I'm hit by a feeling of exhaustion as if I've returned from a war.
何事もなかったかのように、彼は静かに本を読み始めた。
As if nothing had happened, he quietly began to read his book.
This phrase often comes with 'まるで'. That word means 'just like'. Using 'まるで' makes the comparison stronger. It shows a clear difference between what is real and what you are comparing it to. It makes your sentence more lively.
This is more formal than '〜ようだ' and '〜みたいだ'. '〜みたいだ' is for talking. '〜ようだ' is for talking and writing. This form adds a guess, like 'as if'. It sounds more dramatic. It is good for stories or speeches.
Don't use this when you want to say something is actually true. For nouns and な-adjectives, use "である" before "かのようだ". Do not use "だ". For example, say "王様であるかのようだ" (as if he is a king). Do not say "王様だかのようだ". For verbs and い-adjectives, use their plain forms right before "かのようだ".
More formal alternatives(1)
Track your mastery
Kumi's KMT system tracks your mastery across kanji, vocabulary, grammar, and reading. Create a free account to use it on 220,000+ concepts.