From amphitheatrical + -ly.
amphitheatrically (comparative more amphitheatrically, superlative most amphitheatrically)
- With some apparent characteristics of an amphitheatre.
1919, Aristides E. Phoutrides, Life Immovable:
- The citadel walls that crown the hill, on the slopes of which the modern city descends amphitheatrically into the sea, are remnants of Venetian fortifications.