A regret letter to someone should include an apology. The letter should also include what steps should be taken again, if the same scenario happens again.
'We regretfully advise you...' or 'We regret to advise you...' would be correct versions of your example.
Dear______, I regret my decision to_______________
Invitation letter of acceptance letter of regret thank-you note letter of congratulation letter of regret
ewan ko!
Rue.
payback
RUE
woe, rue
Regret is already a verb because it is an action.Other verbs are regrets, regretting and regretted.Some example sentences are:"I regret the decision"."He regrets accepting the offer"."I am regretting what I said"."He soon regretted forgetting his parachute".
The present perfect tense of regret is:I/You/We/They have regretted.He/She/It has regretted.
sense?
Rued