DEBATABLY

Etymology

Adverb

debatably (comparative more debatably, superlative most debatably)

In a way subject to challenge or worthy of debate.

Synonyms

• debatedly, non-standard variant

• arguably, closest synonym

• plausibly

Source: Wiktionary

DEBATABLE

De*bat"a*ble, a. Etym: [Cf. OF. debatable. See Debate.]

Definition: Liable to be debated; disputable; subject to controversy or contention; open to question or dispute; as, a debatable question. The Debatable Land or Ground, a tract of land between the Esk and the Sark, claimed by both England and Scotland; the Batable Ground.

Source: Webster’s Unabridged Dictionary 1913 Edition