'arbitration-related' originates from English, formed by combining the noun 'arbitration' and the adjective 'related'. 'Arbitration' ultimately traces to Latin (see 'arbitrari'/'arbiter'), and 'related' traces to Latin via Old French ('relatus' from 'referre').

'arbitration' came into English via Medieval Latin/Old French from Latin 'arbiter'/'arbitrari' (judge, consider), developing into Middle English forms and the modern noun 'arbitration'; 'related' comes from Latin 'relatus' (past participle of 'referre') through Old French/Medieval English 'relate' + '-ed'. The compound adjective 'arbitration-related' is a modern English formation combining these established words.

Initially the Latin root for 'arbitration' was associated with judging or considering; over time it came to name the specific process of dispute resolution outside courts. 'Related' originally meant 'brought back' or 'told' in late Latin/French but evolved to mean 'connected', and together the compound now means 'connected to arbitration'.