Причастие прошедшего времени
Used as the simple past tense and past participle of the verb “buttress”.
buttressedпричастие прошедшего времени Functions as an adjective derived from the past participle; can take comparative and superlative forms (more/most buttressed).
The argument was buttressed by solid evidence.
Аргумент был подкреплён надёжными доказательствами.
buttressпричастие прошедшего времени Used predicatively or attributively to describe something that has been provided with buttresses or otherwise reinforced; not normally gradable.