1. Deeply involved
   - neck-deep, up to my neck, up to your neck, up to her neck, up to his neck, up to their necks

See also: involved

• aciculate
• acid
• acid anhydrides
• acid dye
• acid halide
• acid head
• acid hydrogen
• acid precipitation
• acid rain
• acid rock
• acid test
• acid value
• acid-base balance
• acid-base equilibrium
• acid-base indicator
• acid-fast
• acid-forming
• acid-loving
• acid-tasting
• acid-wash
• acidemia
• acidic
• acidic hydrogen
• acidification
• acidify