From ⲙⲩⲧ- (mut-) + ϩⲓⲥⲡⲁⲛⲟⲥ (hispanos), literally meaning "language of the Hispanics".
ⲙⲩⲧϩⲓⲥⲡⲁⲛⲟⲥ (muthispanos) f.