regret

nouns

sadness associated with some wrong done or some disappointment
"he drank to drown his sorrows"; "he wrote a note expressing his regret"; "to his rue, the error cost him the game"
regret, rue, ruefulness, sorrow

verbs

feel remorse for; feel sorry for; be contrite about
regret, repent, rue
feel sad about the loss or absence of
regret
is a type of (narrower)
feel or suffer from the lack of
"He misses his mother"
miss
decline formally or politely
"I regret I can't come to the party"
regret
verb group
express with regret
"I regret to say that you did not gain admission to Harvard"
regret
is a type of (narrower)
show unwillingness towards
"he declined to join the group on a hike"
decline, refuse
express with regret
"I regret to say that you did not gain admission to Harvard"
regret
verb group
decline formally or politely
"I regret I can't come to the party"
regret
is a type of (narrower)
impart knowledge of some fact, state or affairs, or event to
"I informed him of his rights"
inform