with (all due) respect
also with (the greatest) respectused to express polite disagreement in a formal situation:
With all due respect, Sir, I cannot agree with your last statement.
Thesaurus: synonyms and related words
Polite expressions
- actually
- after
- by all means idiom
- chance
- could
- disrespect
- don't mention it! idiom
- excuse
- forgive
- good
- honour
- might I ask/inquire/know idiom
- no problem idiom
- obliged
- pardon
- perhaps
- place
- pleasure
- suppose
- welcome
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