but
US /bʌt/
UK /bʌt/

1.
used to introduce a contrasting statement or clause
:
•
He is small, but strong.
•
I wanted to go, but I was too tired.
2.
used to indicate the impossibility of anything other than what is being stated
:
•
There's nothing but trouble with that car.
•
She does nothing but complain.
1.
except; apart from
:
•
Everyone but John was there.
•
I had no choice but to agree.
1.
a condition or limitation
:
•
There are no ifs, ands, or buts about it.
•
He accepted the offer without any buts.