おかしい

おかしい
adjective (i-adjective)
strange, funny
1. strange, odd
Something that seems wrong, unusual, or not quite right. Often implies suspicion that something is amiss.
これおかしい。
This is strange.
This story is strange, isn't it?
I thought something was strange.
The sound of this clock is strange, so please take a look.
2. funny, amusing
Something that makes you laugh or smile. Used when something is humorous or comical.
おかしい(はなし)
That's a funny story.
That movie was very funny.
My friend made a funny face and made me laugh.
The way that person talks is so funny, everyone was laughing.
The children watched a funny video and were laughing so hard they were holding their stomachs.

Context determines whether おかしい means 'strange' or 'funny'. When describing a person's behavior or a situation that seems wrong, it means 'strange'. When describing comedy or jokes, it means 'funny'. Can also be written 可笑(おか)しい in kanji, but hiragana is more common.