at haphazard
at intervals
at irregular intervals
at large
at random
brokenly
by catches
by chance
by fits
by jerks
by snatches
capriciously
carelessly
chaotically
desultorily
diffusely
disconnectedly
discontinuously
dispersedly
eccentrically
erratically
every which way
everywhere
fitfully
haltingly
haphazardly
helter-skelter
here and there
higgledy-piggledy
hit or miss
impulsively
in all quarters
in places
in snatches
in spots
inconsistently
inconstantly
indiscriminately
infrequently
intermittently
irregularly
jerkily
lurchingly
nonuniformly
off and on
on occasion
passim
patchily
promiscuously
randomly
radically