| 例句 |
imperceptibleadjective not perceptible by a sense or by the minda slight difference in hue between the two glasses that's imperceptible unless they're placed side by side impalpable, inappreciable, indistinguishable, insensible inaudible, intangible, invisibleinconspicuous, indistinct, unnoticeable, unseeable, unseenfaint, insignificant, liminal, slender, slight, subtle, trivialburied, concealed, covert, disguised, hidden, obscure, shrouded, unapparent, vague appreciable, discernible(also discernable), palpable, perceptible, ponderable, sensible audible, observable, recognizable, tangible, visibleclear, conspicuous, evident, eye-catching, manifest, noticeable, obvious, plain, prominent, strikingapparent, distinct, significant, straightforward in the 15th century |