I have to wake up at oh dark thirty tomorrow.
oh dark thirty
idiomSome unspecified hour in the early morning (implying an unpleasant time to be awake).
Origin
From U.S. military terminology, in which hours before 10:00 am are prefixed with a zero, read as "oh", as in 0530, oh five-thirty, for 5:30 am.
The flight leaves at oh dark thirty, so we need to leave the house by four.
Soldiers grumbled about the drill scheduled for oh dark thirty, knowing sleep would be scarce and coffee would be weak.
- 01
dark cloud
A situation or future event that causes worry, problems or unhappiness, likened to such a cloud overhead in the sky.
- 02
dark horse
Someone who possesses talents or favorable characteristics that are not known or expected by others.
- 03
look on the dark side
To examine a situation, usually unfavorable, from a negative perspective; to be pessimistic or miserable.
- 04
oh dark hundred
Some unspecified hour in the early morning (implies an unpleasant time to be awake)
- 05
oh my
oh my God
- 06
oh my goodness gracious
Oh my God.
- 07
oh my gosh
oh my God!
- 08
oh well
An expression of mild disappointment or resignation: too bad; it's a pity; what can you do; it is what it is.