[1] : WordNet (r) 2.0

add up
     v 1: develop into; "this idea will never amount to anything";
          "nothing came of his grandiose plans" syn: come, amount
     2: determine the sum of; "add all the people in this town to
        those of the neighboring town" syn: total, tot, tot
        up, sum, sum up, summate, tote up, add, add
        together, tally
     3: add up in number or quantity; "the bills amounted to
        $2,000"; "the bill came to $2,000" syn: total, number,
         come, amount
     4: be reasonable or logical or comprehensible syn: make sense
see also:
come amount total tot tot up sum 
sum up summate tote up add add together 
tally number make sense 

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

49 moby thesaurus words for "add up":
   add up to, aggregate, aggregate to, amount to, be ok, be correct,
   be just right, be right, cast up, cipher up, come, come to,
   comprise, compute, contain, count up, detail, figure up, foot up,
   inventory, itemize, mount up to, number, recap, recapitulate,
   recite, reckon up, reckon up to, recount, rehearse, relate,
   run into, run to, score up, sum, sum up, summarize, summate, tally,
   tally up, tot, tot up, tot up to, total, total up, tote, tote up,
   tote up to, unitize

Add >> A Words
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Add To >> A Words
Add To, definition of term: Add To
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Act Up >> A Words
Act Up, definition of term: Act Up
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