sanitize

verb (used with object), san·i·tized, san·i·tiz·ing.

1. to free from dirt, germs, etc., as by cleaning or sterilizing.
2. to make less offensive by eliminating anything unwholesome, objectionable, incriminating, etc.: to sanitize a document before releasing it to the press.

verb (tr)

1. to make sanitary or hygienic, as by sterilizing
2. to omit unpleasant details from (a news report, document, etc) to make it more palatable to the recipients

v.1836, from stem of sanitary + -ize. Metaphoric sense is from 1934. Related: Sanitized; sanitizing.