Denshi Jisho — Online Japanese dictionary

侵す おかす 1: to invade; to raid; to violate (airspace, etc.); to intrude; to trespass;
2: to infringe; to encroach;
3: to harm; to afflict; to affect
Common word, Godan verb with su ending, Transitive verb 
冒す おかす 1: to brave; to risk; to face; to venture;
2: to harm; to afflict; to affect;
3: to desecrate; to profane;
4: to assume (someone else's surname); to take
Common word, Godan verb with su ending, Transitive verb 
犯す おかす 1: to commit (e.g. crime); to perpetrate;
2: to transgress; to contravene;
3: to violate; to ravish; to rape; to deflower
Common word, Godan verb with su ending, Transitive verb 

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