Synonyms for Plus (same or very similar meaning)
WordNet sense 1 (a useful or valuable quality):
asset
WordNet sense 2 (greater than zero):
positive
WordNet sense 3 (the arithmetic operation of summing; calculating the sum of two or more numbers):
addition, summation
WordNet sense 4 (giving an advantage):
advantageous
From the ODE community, based on WordNet
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