I cannot conceive of "reverse" or "upward" delegation - seems a contradiction in terms, However, you will find antonyms here: delegate - Synonyms from Thesaurus.com
Student or Learner
Can anyone think of an antonym for delegate?
Google comes up with over a million hits for reverse delegation and half a million for upwards delegation and I suppose the prevalence of these phrases suggests that there is no single-word antonym.
However, I'm hoping the erudition of the members of this website outweighs that of the average Internet user (and that flattery gets results .
Avoidance seems as good a term as any.
I'm sure the practice predates Shakespeare so wondered whether there was some long established word with the same meaning as the rather more modern phrase.