1) Arbitrarily fine 2) Arbitrarily penalize 3) Assess a fine 4) Court imposed fine 5) Fine 6) Fine arbitrarily 7) French word used in English 8) Mulct 9) Penalise 10) Penalize 11) Penalize by fine 12) Punish 13) Punish arbitrarily 14) Punish by a fine 15) Punish by arbitrary penalty 16) Punish by fine Found on https://www.crosswordclues.com/clue/amerce
• (v. t.) To punish, in general; to mulct. • (v. t.) To punish by a pecuniary penalty, the amount of which is not fixed by law, but left to the discretion of the court; as, the amerced the criminal in the sum on the hundred dollars. Found on http://thinkexist.com/dictionary/meaning/amerce/
A·merce' (ȧ*mẽrs') transitive verb [ imperfect & past participle Amerced (ȧ*mẽrst'); present participle & verbal noun Amercing .] [ Old French amercier , from a merci at the mercy of, liable to a... Found on http://www.encyclo.co.uk/webster/A/69