WordReference Random House Unabridged Dictionary of American English © 2026
o•ver•ac•tive
(ō′vər ak′tiv),USA pronunciation adj.
o′ver•ac•tiv′i•ty, o′ver•ac′tive•ness, n.
- exceptionally or excessively active;
too active.
- over- + active 1640–50
'overactive' also found in these entries (note: many are not synonyms or translations):