Syllable contact is a notion introduced to describe the sonority relation between adjacent segments across a syllable boundary, that is, between heterosyllabic coda and onset segments. According to Hooper (1976), Murray and Vennemann (1983), and Vennemann (1988), among others, there is a cross‐linguistic preference to avoid rising sonority across a syllable boundary; this tendency is formulated as the Syllable Contact Law (SCL). This law states, for example, that
al.ta
, with falling sonority, is preferred to
at.la
, with rising sonority. This law has been adduced to account for both diachronic and synchronic sound alternations in coda—onset clusters.