Mayrinax and Pa’kuali’, two subdialects of C’uli’, are unique among Atayal dialects in having male and female register distinctions in their vocabulary.

The education system mandated Mandarin instruction, leading to a decline in the intergenerational transmission of Atayal.

In some dialects but not all, schwa /ə/ is frequently omitted in writing, resulting in long consonant clusters on the surface (e.g. pspngun /pəsəpəŋun/).

Even though some literature includes a glottal fricative in the consonant inventory, that phoneme is phonetically realized as a pharyngeal (Li 1980), which is true for Atayalic languages in general.

The alveolar fricative (s) and affricate (ts) are palatalized before [i] and [j], rendering [ɕ] and [tɕ], respectively (Lu 2005), as in the Sinitic contact languages Mandarin Chinese and Taiwanese Hokkien.

Plngawan Atayal (a subdialect of Ci'uli') differs from this inventory in that it lacks a schwa (ə), and that there are two phonemic rhotics (Shih 2008).

Squliq Atayal has a voiced alveo-palatal fricative [z] (Li 1980), but Huang 2015 doubts its phonemicity, arguing that it is an allophone of [j].

Mayrinax Atayal (a Cʔuliʔ dialect spoken in Tai'an Township, Miaoli County) has a four-way focus system (Huang 2000b).