only when necessary Synonyms
Here are words similar to only when necessary:
ad interim,
at infrequent intervals,
at intervals,
at odd times,
at times,
at various times,
betimes,
between acts,
betweentimes,
betweenwhiles,
brokenly,
by catches,
by fits,
by jerks,
by skips,
by snatches,
disconnectedly,
discontinuously,
during the interval,
en attendant,
ever and again,
ever and anon,
every so often,
fitfully,
for a time,
for the meantime,
for the nonce,
haphazardly,
here and there,
in spots,
in the interim,
in the meanwhile,
infrequently,
intermittently,
irregularly,
meantime,
meanwhile,
now,
now and then,
occasionally,
off and on,
on divers occasions,
on occasion,
once and again,
only occasionally,
only when necessary,
pendente lite,
per saltum,
periodically,
randomly,
skippingly,
sometimes,
sporadically,
uncommonly,
