Fix up and Fiddle with

Fix up verb - Make arrangements for.

Fiddle with and fix up are semantically related In some cases you can use "Fiddle with" instead a verb "Fix up".

Fiddle with verb - To handle thoughtlessly, ignorantly, or mischievously.

Fix up and fiddle with are semantically related in fix topic. Sometimes you can use "Fix up" instead a verb "Fiddle with", if it concerns topics such as adapted, bring into agreement or to a standard.