WordNet (r) 3.0 (2006):

get by
    v 1: come to terms with; "We got by on just a gallon of gas";
         "They made do on half a loaf of bread every day" [syn:
         cope, get by, make out, make do, contend,
         grapple, deal, manage]
    2: pass or move in front of; "Bride's Biscuit got by the other
       dogs to win the race"
    3: escape potentially unpleasant consequences; get away with a
       forbidden action; "She gets away with murder!"; "I couldn't
       get out from under these responsibilities" [syn: get off,
       get away, get by, get out, escape]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "get by":
   accomplish, achieve, answer, avail, be equal to, be missed, be so,
   be such, bear, bring off, bring through, carry off, clear,
   clear the hurdle, come along, come on, come out, come through,
   compass, contrive, cop a plea, cop out, cope, crown with success,
   cut the mustard, do, do it, do the trick, do with, eke out,
   engineer, escape attention, escape notice, escape one,
   escape without penalty, fare, fill the bill, fulfill, get along,
   get along on, get away with, get by on, get off, get off cheap,
   get on, go along, go around, go at liberty, go free, go on,
   go scot free, hack it, hold, hold up, just do, keep afloat,
   make do, make ends meet, make it, make out, make the grade,
   makeshift, manage, manage somehow, manage with, meet,
   meet requirements, muddle through, negotiate, not register, pass,
   pass muster, pull off, put across, put over, put through, qualify,
   reach, satisfy, scrape along, serve, serve the purpose, shape up,
   stack up, stagger, stand, stand the test, stand up, stretch,
   subsist, succeed in, suffice, survive, swing, swing the deal,
   take it, turn out, turn the trick, win freedom, work,
   worry along