decerno

Etymology
From.

Verb

 * 1)  to decide, decide upon, settle, determine (especially something disputed or doubtful)
 * 2)  to pronounce a decision concerning something; decide, determine, judge, declare, decree; vote for something
 * 3)  to decide by combat; fight, combat, contend
 * 1)  to pronounce a decision concerning something; decide, determine, judge, declare, decree; vote for something
 * 2)  to decide by combat; fight, combat, contend

Conjugation
Note that the dēcrēvisse is sometimes written as dēcrēsse and dēcrēverō as dēcrērō.