add is one of the 1000 most common headwords. actual - add - address See also ADD Pronunciation IPA (key): /æd/ Audio (US)(file) Homophone: ad Verb Plain form add Third-person singular adds Past tense added Past participle added Present participle adding (transitive & intransitive) If you add x {\displaystyle x} to y {\displaystyle y} , you put x {\displaystyle x} and y {\displaystyle y} together. Cook for five minutes, then add the remaining spices to the soup. (transitive & intransitive) If you add time, or price, you increase it. A new kitchen would add value to the home. We need to add five more waiters by next week. (transitive) If you add something to what you've said, you say something more. I paused for a moment, then added, "Would you mind if I had some pudding?" Synonyms (put together) include (increase) increase Antonyms subtract Related words adder addition additive add on add up Basic math (edit) arithmetic - algebra addition - subtraction - multiplication - division exponent - square root - fraction least common multiple - greatest common factor Wikiwand - on Seamless Wikipedia browsing. On steroids.