Way 1 · best default
but
Joins two ideas in one sentence. The second idea goes against the first. + a new clause.
Examples
I'd love to come, but I'm working late.
The food was great, but the service was slow.
In a conversation
A: Are you coming tonight?
B: I'd like to, but I have an early start.
Common mistake
Not: I like the flat, but however it's too small.
Say: I like the flat, but it's too small.
"But" and "however" do the same job. Use one, never both.
