
I think the point is
that Howard owes him an APOLOGY.
The Big Bang Theory Season 12, Episode 6

I guess I owe the Betty Crocker Company
a letter of APOLOGY.
The Big Bang Theory Season 1, Episode 11

That's not an APOLOGY.
The Big Bang Theory Season 5, Episode 16

...I delivered a heartfelt APOLOGY.
Now, you say "APOLOGY accepted"...
The Big Bang Theory Season 4, Episode 7

All right, APOLOGY accepted.
Have a nice night.
The Big Bang Theory Season 7, Episode 7