1. Ostentatiously lofty in style
   - bombastic, declamatory, large, tumid, turgid 
2. (of sounds) full and rich
   "orotund tones"
   - rotund, round, pear-shaped

See also: full, rhetorical

• long-chain molecule
• long-clawed prawn
• long-dated
• long-distance
• long-distance call
• long-distance runner
• long-drawn-out
• long-eared bat
• long-eared owl
• long-faced
• long-familiar
• long-fin tunny
• long-haired
• long-handled
• long-handled spade
• long-head coneflower
• long-headed
• long-horned beetle
• long-horned grasshopper
• long-jawed
• long-lasting
• long-legged
• long-life
• long-lived
• long-lost