Way 1 · best default
I've been swamped
You've had too much to do. A clear reason that works with anyone.
Examples
Sorry, I've been swamped this week. How are you?
I've been swamped with exams, but I'm free on Saturday.
In a conversation
A: Haven't heard from you in ages!
B: I know, sorry. I've been swamped at work.
Common mistake
Not: I'm very busy so I can't reply you.
Say: Sorry, I've been swamped.
That sounds like a door closing. Say sorry, give the reason, and leave the door open.
