WordNet sense 1 (inferior in rank or status):

inferior, lowly, secondary, subaltern, subordinate, junior-grade, lower-ranking

WordNet sense 2 (younger; lower in rank; shorter in length of tenure or service):

junior

WordNet sense 3 ((informal) small and of little importance):

lilliputian, little, niggling, picayune, piddling, piffling, trivial, fiddling, footling

WordNet sense 4 (not important):

unimportant

WordNet sense 5 (larceny of property having a value less than some amount (the amount varies by locale)):

petit larceny, petty larceny

WordNet sense 6 (contemptibly narrow in outlook):

small-minded

WordNet sense 7 (lacking tolerance or flexibility or breadth of view):

narrow