without question and beyond doubt;
"it was decidedly too expensive"
"she told him off in spades"
"by all odds they should win"
- She was decidedly cool about the proposal.
- He spoke so decidedly that I dared not question him.
- You must try decidedly even if it is not utterly sure.
- The milk smells/tastes decidedly off.
- The conclusion he drew was decidedly wrong.
- I feel decidedly unwell this morning.
- That overcoat is looking decidedly past it.