superincumbent (adj.)

• beetle
• beetle-browed
• beetling
• burdensome
• cumbersome
• cumbrous
• demanding
• exacting
• exigent
• greater
• grievous
• higher
• imbricate
• impendent
• impending
• incumbent
• jutting
• lowering
• lumpish
• massive
• onerous
• oppressive
• over
• overlying
• pending
• projecting
• taxing
• tough
• unwieldy
• weighty