- tumultuous; turbulent:
- of the nature of or resembling a tempest:
- causing insidious harm or ruin; ruinous; injurious; hurtful:
- deadly, fatal
- a reduction or decrease in numbers, size, or strength:
- the act of rubbing against something; friction.
- a wearing down or away by friction; abrasion.
- imperturbable self-possession, poise, or assurance.
- the perpendicular, or vertical, position.