Lugubrious rhymes with:
aquarius, curious, deleterious, delirious, demetrius, denarius, dimitrius, dimitrius', furious, glorious, gregarious, hilarious, illustrious, imperious, industrious, inglorious, injurious, laborious, marius, meritorious, murias, mysterious, nefarious, notorious, pancreas, penurious, precarious, serious, spurious, stradivarius, tavoulareas, various, vicarious, victorious, vitreous
Lugubrious sounds like:
l'express, lakeberg, lashbrook, leesburg, lekberg, lesabres, lewisburg