[1] : WordNet (r) 2.0

higher up
     adv : in or to a place that is higher syn: above, in a higher
           place, to a higher place ant: below
see also:
above in a higher place to a higher place below 

[2] : Moby Thesaurus II by Grady Ward, 1.0

50 moby thesaurus words for "higher up":
   a per se, ace, boss, bureaucracy, champion, chief, commander, dean,
   directorate, fugleman, genius, head, hierarchy, higher echelons,
   higher-ups, laureate, leader, management, master, ministry,
   nonpareil, officialdom, paragon, prelacy, principal, prodigy,
   ruler, ruling class, ruling classes, senior, star, superior,
   superman, superstar, the establishment, the administration,
   the authorities, the greatest, the ingroup, the interests,
   the most, the people upstairs, the power elite,
   the power structure, the top, them, they, top brass, top dog,
   virtuoso

Ball Up >> B Words
Ball Up, definition of term: Ball Up
ball+up_pag1.html

Bang Up >> B Words
Bang Up, definition of term: Bang Up
bang+up_pag1.html

Backed Up >> B Words
Backed Up, definition of term: Backed Up
backed+up_pag1.html

Back Up >> B Words
Back Up, definition of term: Back Up
back+up_pag1.html

Ante Up >> A Words
Ante Up, definition of term: Ante Up
ante+up_pag1.html

Act Up >> A Words
Act Up, definition of term: Act Up
act+up_pag1.html