barely perceptible• These immortal ideas, things barely perceptible are the most precious things of life.• a barely perceptible change• A barely perceptibledelay as you gaze through it.• The roses in the garden of the aunts were covered by a thin, barely perceptiblelayer of dust.• He gave a barely perceptible nod as if he had read her mind and applauded her attitude.• His voice carried a barely perceptible quaver.• This was followed by the barely perceptible rustle of snow crystals hitting the newly exposed portion of the roof.• And slowly, slowly, so gradually that it was barely perceptible, the watchers became aware of a change.