Can I say 'I'll be there at on time". Here I didn't mention any timings.
Can I use 'ontime' here? .
The correct English is: "I'll be there on time".
A typical conversation might be:
"Do you realize that we start work at 8:30 in the morning?"
"Yes, and I promise that I'll be there on time".
.. "ontime" is not a word as such, although I have seen it used as the name of a company or service.
For example: "Call us at Ontime Courier Service, always fast & reliable".
not a teacher
Student or Learner