Third-person singular present tense of decern; means to decide, decree, or determine officially.
From Latin decernere, same root as decernment. The -s ending marks third-person singular present tense in English.
This archaic verb survives mainly in Scottish legal language, where judges still 'decern' orders—it's a living fossil of Latin that shows how legal systems preserve ancient terminology longer than everyday speech.
Complete word intelligence in one call. Free tier — 50 lookups/day.