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I am an Assistant Professor in the Program in Linguistics at Princeton University. My research is on the abstract grammatical systems of spoken language, specifically how to model the patterns of individual grammars comprehensively but also restrictively. I focus primarily on phonology (sounds and sound patterns), but this work spans the interfaces with morphology and syntax (word and sentence structure) as well as phonetics (the physical manifestation of language).
Empirical topics include grammatical tone, tonal sound change, the interaction of pitch and segments, vowel harmony, and allomorphy, while theoretical topics include autosegmental phonology and representation, multiple exponence, subcategorization, prosodic recursion, and the architecture of the syntax-phonology interface. For links to my publications and presentations, see my CV.
A major component of this work involves careful descriptive and areal-typological work on African languages, especially those of the Niger-Congo language family stretching across the continent. Crucial to these efforts is in situ fieldwork and data collection, and I have been able to collaborate with speakers of various Nigerian languages and most recently the Wara Wara Limba community of Sierra Leone.
Recent
Feb 2026 — Completion of the “Limba-English Community Dictionary (with English-Limba Index)”, collaborating with Kondeh Mansaray and Kondowulay Marah. [click to download]
Jan 2026 — Talk at the Workshop on “The Role of Representation in Computational Phonology” (@OCP23) with Adam Jardine (Rutgers) — “Kalabari tonotactics require Forbidden Substructure Constraints stated over substrings not autosegmental representations” [handout]
[ ˈnɪkəlɪs ˈɹoʊli ] Program in Linguistics, Princeton University
Green Hall, 1-S-16
Office Hours: I am currently on sabbatical — Contact me to book an appointment
Website updated 2026 Feb 07