Amharic

bäläbbälä - become old, become tattered (of clothes) (CDG 95)

reduplicated root, also in boläbbolä = become treadbare

PS
*bly - to be old, worn out (CDG 98; Kogan 2015: 184; EDA I 212)

Connection with ESA blyt ‘to be buried suggested by W. Müller (1962: 29, 1963: 307) is doubtful (CDG 98)