Phonologically
Phonology is the branch of linguistics that studies the systematic organization of sounds in languages. The adverb phonologically is used to describe statements, processes, or phenomena that pertain to the sound system of a language. When a claim is described as phonological, it signals that the relevant evidence concerns phonemes, phonotactics, prosody, syllable structure, and related aspects of sound organization rather than meaning or syntax.
Phonology is distinct from phonetics, which concerns the physical articulation and perception of speech sounds. A
The form phonologically is used in cross-linguistic and theoretical work to bound discussion to sound structure.