- insistent, repetitive - persistently continual; "the bluejay's insistent cry"
Antonym: sporadic (indirect, via continual)
- clamant, crying, exigent, insistent, instant - demanding attention; "clamant needs"; "a crying need"; "regarded literary questions as exigent and momentous"- H.L.Mencken; "insistent hunger"; "an instant need"
Antonym: beseeching (indirect, via imperative)