another word for the evening to ponder over---

re·gret:
To feel sorry, disappointed, or distressed about.
To remember with a feeling of loss or sorrow; mourn.
A sense of loss and longing for someone or something gone.
A feeling of disappointment or distress about something that one wishes could be different.

regrets-A courteous expression of regret, especially at having to decline an invitation.

Middle English regretten, to lament, from Old French regreter : re-, re- + -greter, to weep

Synonyms: regret, sorrow, grief, anguish, woe, heartache, heartbreak
These nouns denote mental distress. Regret has the broadest range, from mere disappointment to a painful sense of dissatisfaction or self-reproach, as over something lost or done: She looked back with regret on the pain she had caused her family. Sorrow connotes sadness caused by misfortune, affliction, or loss; it can also imply contrition: “sorrow for his... children, who needed his protection, and whom he could not protect” (James Baldwin). Grief is deep, acute personal sorrow, as that arising from irreplaceable loss: “Grief fills the room up of my absent child,/Lies in his bed, walks up and down with me” (Shakespeare). Anguish implies agonizing, excruciating mental pain: “I pray that our heavenly Father may assuage the anguish of your bereavement” (Abraham Lincoln). Woe is intense, often prolonged wretchedness or misery: “the deep, unutterable woe/Which none save exiles feel” (W.E. Aytoun). Heartache most often applies to sustained private sorrow: The child's difficulties are a source of heartache to the parents. Heartbreak is overwhelming grief: “Better a little chiding than a great deal of heartbreak” (Shakespeare).