Terminally rhymes with:
criminally, nominally, phenomenally, 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, regionally, rotationally, seasonally, traditionally, unconditionally, unconstitutionally, unintentionally
Terminally sounds like:
terminal, thermal, thornell, thornhill, thornley, tramel, tramell, tramiel, trammel, trammell, tremel, treml, tremmel, triennial, trunnell, turmel, turmoil, turnley