euthumos describes the willing, positive manner in which Paul makes his defense before the governor.

The attested use describes Paul’s positive and willing manner as he begins his defense before the governor in Acts 24:10.

1. A positive willingness in making a defense · dominant

   In Acts 24:10, the adverb εὐθύμως modifies Paul’s making of his defense after the governor signals him to speak; the APB renders the clause, “I cheerfully make my defense concerning myself.”

   Acts 24:10

In the Anselm Project Bible: In Acts 24:10, the APB presents the manner with “cheerfully” in Paul’s statement that he makes his defense. The verse is read as a whole, but the clause supports this positive manner of speaking.