The most common answers for the crossword clue "Certainly!" include:
- YES (3 letters)
- SURE (4 letters)
- INDEED (6 letters)
- DOUBTLESS (9 letters)
- BY ALL MEANS (10 letters)
- YOU BET (6 letters)
- NO DOUBT (7 letters)
- SURELY (6 letters)
- OF COURSE (9 letters)
- ABSOLUTELY (10 letters)
The easiest and most frequent answer is YES with 3 letters, but depending on the length and letter pattern required, other options like SURE, INDEED, or OF COURSE are also very common.