Definition of mis-serve in US English:

mis-serve

verb

rare
  • with object To serve badly or unfaithfully; to do a disservice to; to mistreat.

Origin

Middle English; earliest use found in Ayenbite of Inwyt. Perhaps originally from Anglo-Norman and Old French messervir from mes- + servir; in later use probably independently from (or reinforced by) mis- + serve.

Pronunciation

mis-serve

/ˌmɪsˈsəːv/