What does "hyperkinesis" mean?

Abnormally increased and sometimes uncontrollable activity or muscular movements.

How do you pronounce "hyperkinesis"?

Pronounced //ˌhaɪpə(ɹ)kɪˈniːsɪs//.

Common synonyms include: attention deficit hyperactivity disorder, hyperkinesia, hyperkinetic disorder, overextension.

//ˌhaɪpə(ɹ)kɪˈniːsɪs// noun

noun ·Rare ·Advanced level

Noun

1
Abnormally increased and sometimes uncontrollable activity or muscular movements. countable, uncountable
2
A condition especially of childhood characterized by hyperactivity. countable, uncountable

From hyper- + -kinesis.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.