i-adjective
Colloquial adjective describing something that is old, worn, or in poor condition, often with a negative or dismissive tone.
このアパート、家賃は安いけど、ボロいんだよね。
This apartment is cheap, but it's really run-down.
彼の車はもうボロいから、そろそろ買い替え時だ。
His car is already beat-up, so it's about time to replace it.
Derived from the noun ぼろ (rag, scrap, flaw), with the adjective-forming suffix い. The kanji 襤褸 are ateji and rarely used.