In English the adjective opaque plus the nominal suffix -ity (formally represented as [[opaque] ity]) constitute a cyclic domain to which the cyclic stress rules and the cyclic rules of Trisyllabic Shortening and Velar Softening apply, yielding the surface form opácity.
- Kiparsky, P. 1982. From Cyclic Phonology to Lexical Phonology. In van der Hulst, H. & Smith, N. (eds.) The Structure of Phonological Representations (I), 131-175.
- Mascaró, J. 1976. Catalan Phonology and the Phonological Cycle. PhD dissertation. Cambridge, Mass: MIT. Distr. by IULC, Bloomington Indiana, 1978.
- Spencer, A. 1991. Morphological Theory. Blackwell, Oxford.