American Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition ADD in American English

ADD noun

[uncountable] noun
/ˌeɪ di ˈdi/
1

attention deficit disorder: a medical condition that makes someone more active than normal, makes it difficult for them to concentrate, and causes problems with their behavior

Synonyms and related words
Definition ADD in American English