1. supported or strengthened by a buttress or similar structure
Usage: architecture
2. strengthened or supported by additional evidence or arguments

1. past tense of buttress: to support or strengthen with a buttress
Usage: architecture
2. past tense of buttress: to give support or strength to something

Examples

• The cathedral walls were buttressed with massive stone supports.
• Her argument was buttressed by extensive research and data.
• The ancient fortress had buttressed walls that withstood many sieges.
• The professor buttressed his theory with compelling evidence.
• The buttressed foundation prevented the building from collapsing.
• His claims were buttressed by testimony from multiple witnesses.