"Utter disregard" means completely ignoring or not caring about something/someone, even to the highest degree possible.
Sentences with «utter disregard»
And doing so with utter disregard for the other effects that those genetic changes might produce. (2ndchance.info)
Or here is primitive agriculture, faithfully carried on in utter disregard of soil conservation, rotation of crops, and all modern techniques. (religion-online.org)
He said, «It shall be proved by persons living it in their lives with utter disregard of the consequences to themselves». (globaleducationmagazine.com)