"desexualize" in the verb sense
1. desexualize, desexualise
direct one's libidinous urges into another direction
2. sterilize, sterilise, desex, unsex, desexualize, desexualise, fix
"in some countries, people with genetically transmissible disabilites are sterilized"
Source: WordNet® (An amazing lexical database of English)
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