gainspeaker
nounEtymology From gain- + speaker.
1
No plural, Obsolete A gainsayer; opponent.
- To this was appended "A Brief Rehearsal of the Belief of the Good-willing in England which are named the Family of Love, With the Confession of their upright Christian Religion against the false Accusation of their Gain-speakers."1575, Strype, Annals: