Hypertext Webster Gateway: "imperceptibly"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Imperceptible \Im`per*cep"ti*ble\, a. [Pref. im- not +
perceptible: cf. F. imperceptible.]
Not perceptible; not to be apprehended or cognized by the
souses; not discernible by the mind; not easily apprehended.
Almost imperceptible to the touch. --Dryden.
Its operation is slow, and in some cases almost
imperceptible. --Burke.
-- {Im`per*cep"ti*ble*ness}, n. -- {Im`per*cep"ti*bly}, adv.
Their . . . subility and imperceptibleness. --Sir M.
Hale.
From WordNet (r) 1.7 (wn)
imperceptibly
adv : in an imperceptible manner or to an imperceptible degree;
"the power of the Secretary of State in London
increased gradually but imperceptibly" [syn: {unnoticeably},
{observably}] [ant: {perceptibly}]
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