Definition of 'add up'

Verb

1. develop into; "This idea will never amount to anything"; "nothing came of his grandiose plans"
      Synonyms: come amount
2. determine the sum of; "Add all the people in this town to those of the neighboring town"
      Synonyms: 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"
      Synonyms: total number come amount
4. be reasonable or logical or comprehensible
      Synonyms: make sense

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