WordWeb Online

1. Cause extensive destruction or ruin utterly
   "The enemy devastate the countryside after the invasion";
   - lay waste to, waste, desolate, ravage, scourge, lay waste
    
2. Overwhelm or overpower
   "He was devastated by his grief when his son died"

Derived forms: devastating, devastates, devastated

Type of: destroy, overcome, overpower, overtake, overwhelm, ruin, sweep over