inappreciable

The highest ambition of the beneficent will be to have a share—even though an utterly inappreciable and unknown share—in 'the making of Man.'...

From Religion and Science From Galileo to Bergson by John Charlton Hardwick

There is only continual change by inappreciable increments.

From A Review of the Systems of Ethics Founded on the Theory of Evolution by C. M. Williams

The slight, and to unaccustomed ears almost inappreciable, shades of aspiration and accentuation, are the main difficulty in the way of foreigners desirous of learning the Chinese language.

From Narrative of the Circumnavigation of the Globe by the Austrian Frigate Novara, Volume II (Commodore B. Von Wullerstorf-Urbair,) Undertaken by Order of the Imperial Government in the Years 1857, 1858, & 1859, Under the Immediate Auspices of His I. and R. Highness the Archduke Ferdinand Maximilian, Commander-In-Chief of the Austrian Navy. by Karl Ritter von Scherzer

In certain ways it was clearly an advantage to a playwright to be able to produce a large number of scenes, varying in length according to his pleasure, and separated by almost inappreciable intervals.

From Oxford Lectures on Poetry by Andrew Cecil Bradley

Similarly, if a flower receives fifteen insect visits, the diminution is about one-twenty-fifth, if insects visit on the average five flowers on a trip; and is inappreciable if they visit ten or fifteen.

From Darwin, and After Darwin (Vol 3 of 3) Post-Darwinian Questions: Isolation and Physiological Selection by George John Romanes