Solutions I regret to say has 21 entries with similar clues
- 3-letter words
- rueBitterly regret
- ive"regrets, ... had a few"
- 4-letter words
- alasCry of regret
- rueshas regrets about
- 5-letter words
- shameStrong regret
- sorryRegretful
- 6-letter words
- ruefulShowing regret
- bewailGreatly regret
- 7-letter words
- remorseDeep regret
- repentsregrets
- 8-letter words
- penitentRegretting one's sins or wrongdoings
- contriteRegretting one's sins or wrongdoings
- isitsafe"Will we regret doing this?" (3 wds)
- 9-letter words
- deprecateDeeply regret
- apologiseExpress regret
- 10-letter words
- lamentableRegrettable
- remorsefulRegretful
- apologeticRegretful
- 11-letter words
- out-with-itSay what you have to say
- 15-letter words
- negativerepliesWritten regrets
- 21-letter words
- come-to-a-pretty-passReach a regrettable state of affairs