quietly
adverb
[ ˈkwʌɪətli ]
• in a quiet manner.
• "he worked quietly and diligently"
Similar:
silently,
in silence,
noiselessly,
soundlessly,
inaudibly,
mutely,
dumbly,
tacitly,
stilly,
softly,
making little noise,
in a low voice,
in a whisper/murmur/mumble,
murmuringly,
under one's breath,
in an undertone,
sotto voce,
gently,
faintly,
weakly,
feebly,
discreetly,
privately,
confidentially,
secretly,
unofficially,
off the record,
between ourselves,
unobtrusively,
unostentatiously,
unpretentiously,
with restraint,
with reserve,
conservatively,
soberly,
modestly,
demurely,
plainly,
calmly,
patiently,
placidly,
serenely,
undemonstratively,
unemotionally,
unassumingly,