Simple past tense and past participle of neuter.(verb)
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Use "neutered" in a sentence
"It eventually lost its vitality, but not before giving rise to the New Age movement that persists today (as does the institute itself, albeit in neutered form)."
"In the end, I believe that neutral stance will be judged more like 'neutered' - time will tell."
"Progressive leaders like Rep. Anthony Weiner are now calling the neutered public option in the House bill a "once in a lifetime reform," despite the fact that it has eliminated the very provision that the Progressive Caucus promised was essential in order to get its vote."