WordWeb Online

1. Cause to overturn from an upright or normal position
   "he tumped over his beer";
   - overturn, tip over, turn over, upset, knock over, bowl over
    
2. Turn from an upright or normal position
   "The canoe tumped over";
   - overturn, turn over, tip over

Derived forms: tumping over, tumped over, tumps over

Type of: displace, move, turn