- Language: Amarasi
- Alternate names: Timor Amarasi
- Language code: aaz
- Language family: Austronesian, Malayo-Polynesian, Central-Eastern Malayo-Polynesian, Timor-Babar, Nuclear Timor, Uab Meto (SIL classification)
- Number of speakers: 70,000
- Vulnerability: Vulnerable
- Script: Latin script.
Interspersed with Helong (See: [[Helong]]). Most literature in Kotos dialect. Christian.
Part of Uab Meto language chain. Similar to Uab Meto [aoz], but with differences in phonology, vocabulary, and discourse, with semantic shifts, structural differences, intelligibility problems. Ro'is Tais Nonof dialect has intonation like Ro'is dialect, vocabulary like Kotos dialect. Southwest tip of Timor Island. 80 villages. Kotos is central and east, Ro'is is west, Ro'is Tais Nonof is south, Ro'is Hero surrounded by Helong.