plummet /plumˈit/

To plunge headlong

To fathom, sound

1. A leaden or other weight, esp on a plumb line, sounding-line, or fishing-line
2. A plumb rule

• sacrosanct
• sacrosanctities
• sacrosanctity
• sacrosanctness
• sacrosanctnesses
• sacrum
• sacrums
• sacs
• sad
• SAD
• sadden
• saddened
• saddening
• saddens
• sadder
• saddest
• saddhu
• saddhus
• saddie
• saddies
• saddish
• saddle
• saddleback
• saddlebacked
• saddlebacks