IIRC
Abbreviation · Slang & Abbreviations
Definitions
If I Recall Correctly — a qualifier indicating uncertainty about a claim, providing plausible deniability if wrong. The polite way of saying 'I'm about to state something as fact that I'm only 60% sure about.'
In plain English: Short for 'If I Recall Correctly' — a way of saying 'I think this is right but don't quote me on it.'