1. Wreaking or capable of wreaking complete destruction
   "possessing annihilating power";
   - annihilative, devastating, apocalyptic
    
2. Sharply critical or damaging
   "afire with annihilating invective";
   - devastating, withering

1. Destroy completely, leaving no trace
   "The bomb annihilated the building";
   - obliterate
    
2. [informal] Defeat soundly and humiliatingly
   "The home team annihilated the visitors";
   - demolish [informal], destroy, spifflicate [Brit, informal], spiflicate [Brit, informal], pulverize [Brit, informal], pulverise [Brit, informal]
    
3. (physics) undergo mutual destruction by combination of a particle and antiparticle
   "Matter and antimatter annihilate on contact"
    
4. (mathematics) reduce to zero
   "This operation annihilates the determinant"

See also: destructive, disrespectful

Type of: defeat, do away with, eliminate, extinguish, get rid of, get the better of, overcome

Encyclopedia: Annihilate