Amuzgo is an Oto-Manguean language spoken in the Costa Chica region of the Mexican states of Guerrero and Oaxaca by about 44,000 speakers. Like other Oto-Manguean languages, Amuzgo is a tonal language. From syntactical point of view Amuzgo can be considered as an active language. The name Amuzgo is claimed to be a Nahuatl exonym but its meaning is shrouded in controversy; multiple proposals have been made, including [amoʃ-ko] 'moss-in'. A significant percentage of the Amuzgo speakers are monolingual; the remainder also speak Spanish.