Regionally rhymes with:
marginally, originally, additionally, conditionally, congressionally, constitutionally, conventionally, criminally, diagonally, educationally, exceptionally, fractionally, functionally, generationally, institutionally, intentionally, internationally, irrationally, marginally, medicinally, nationally, nominally, nutritionally, occasionally, operationally, originally, personally, phenomenally, professionally, proportionally, provisionally, rationally, rotationally, seasonally, terminally, traditionally, unconditionally, unconstitutionally, unintentionally
Regionally sounds like:
racanelli, rackmil, regional, rosamilia, rossignol