O. K.
Good to go
O.
K. is an older spelling of okay, meaning acceptable, satisfactory, or expressing agreement.
The periods reflect its origin as an abbreviation, though the precise etymology remains disputed.
Modern usage strongly favors OK or okay: Is everything OK?
OK, let's go.
The dotted form now appears mainly in historical contexts or formal documents.
- yesOpposite of no
- approvedOfficially accepted or permitted
- green lightAuthorization to proceed
- affirmativeExpressing agreement or consent
- roger thatRadio confirmation phrase
acceptable · definitely · agreed · sounds good · check · sure · you got it · acknowledged · certainly · endorsed · sign · passable · just fine · okey-dokey · so-so · middling · satisfactory · fair enough