Off key phrase
Hyphenated if used before a noun.
Not be singing or playing the correct musical notes to sound pleasant.
This part of the song was supposed to be sung in treble voice, but he sang bass. So, his voice was obviously off key.
Everything was great until the sound of that off-key accompanist was made.
Different from what is usual or normal.
It was a bit off key to see her waking up before eight in the morning.
The test is designed to detect off-key cells that are likely to become cancerous.
To do something in an unusual way
Used to ask whether the word "funny" is being used to mean "humorous" or "strange"
Used to emphasize that something is so unbelievable, uncommon or ridiculous that you would not see it in stories and it's obviously impossible in real life
A crazy, strange, or eccentric person
This phrase is formed based on the meaning of the noun "key".