asynergia

noun

asy·​ner·​gia ˌā-sə-ˈnər-j(ē-)ə 

variants or asynergy

(ˈ)ā-ˈsin-ər-jē 

plural asynergias or asynergies

: lack of coordination (as of muscles)

asynergia results in jerkiness, overaction and imperfect muscle control

—C. H. Best & N. B. Taylor

asynergic

ˌā-sə-ˈnər-jik 

adjective