bitterly

adv

1. In a bitter manner.

   “Judge Short had gone to town, and Farrar was off for a three days' cruise up the lake. I was bitterly regretting I had not gone with him when the distant notes of a coach horn reached my ear, and I descried a four-in-hand winding its way up the inn road from the direction of Mohair.”

   “Heidi threw herself down beside Clara's chair and began to cry bitterly.”

   “Liverpool's £58m strikeforce of Andy Carroll and Luis Suarez scored the goals that settled the Merseyside derby at Goodison Park - but Everton were left complaining bitterly about Jack Rodwell's controversial early red card.”

2. Extremely

   “On a bitterly cold evening at Wembley, the Lionesses knew only victory would be enough to keep alive Team GB's hopes of competing in Paris.”