I had a conversation earlier and something struck me as not being right. I will denote myself by M and the caller as C.
C:"Hello, M. Is your grandfather there?"
M:"I am not sure to be honest. He usually answers the phone if he is here; that's why I let the phone ring for a while. Sorry."
C:"... or he could be out the back ..."
Given that I said "usually" does that cover the possibility that he could be here and not answer due to being out the back garden? If I said "always", that would mean that regardless whether he is in the house or out the back garden he would answer the phone.
Sounds like a trivial matter, just I had a look in the dictionary and got
Usually: Under normal conditions.
Has the person on the other end of the phone not interpreted what I have said correctly or am I misusing the word usually?