WordNet (r) 3.0 (2006):

look up to
    v 1: feel admiration for [syn: admire, look up to] [ant:
         look down on]

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "look up to":
   accord respect to, admire, adore, apotheosize, appreciate,
   defer to, deify, entertain respect for, esteem, exalt, favor,
   hero-worship, hold in esteem, hold in reverence, honor, idolize,
   prize, regard, respect, revere, reverence, think highly of,
   think much of, think well of, value, venerate, worship