spasmodic

1 ENTRIES FOUND:
spasmodic /spæzˈmɑːdɪk/ adjective
spasmodic
/spæzˈmɑːdɪk/
adjective
Britannica Dictionary definition of SPASMODIC
1 
: relating to or caused by a spasm
2 
: happening suddenly and briefly at different times in a way that is not regular

— spasmodically

/spæzˈmɑːdɪkli/ adverb