ok

"When she asked if we could meet at noon, I responded with an 'ok'."

"His 'ok' was all I needed to proceed with the plan."

"She gave an enthusiastic 'ok' before we started the project."

"I will ok the proposal once I've reviewed it carefully."

"They ok'd the changes to the schedule without hesitation."

"The manager needs to ok the budget before we can start spending."

"The meal was just ok; I expected more."

"He gave me an ok performance, but I know he can do better."

"Her grades were ok, but she aims for a higher average next semester."