unnoticeableadj.

1760 Short & Candid Narr. Mr. Clarke's Dismission 55 Mr. Warren will not..esteem him so very inconsiderable and unnoticeable, as not to deserve an Answer.

1775 J. Adair Hist. Amer. Indians 287 They were afraid of being imprisoned,..even for things unnoticeable in the eye of the law.

1822 W. Wordsworth Descr. Lakes (ed. 3) 134 A light vapour unnoticeable but by a Shepherd.

1859 ‘G. Eliot’ Adam Bede I. i. x. 190 A long-neglected and unnoticeable rent in the..bed-curtain.

1888 Housewife 3 436/1 If the mend is dampened and pressed with a hot iron it is almost unnoticeable.

1937 Amer. Home Apr. 97/1 The fact that they could not be spaced with exact symmetry in relation to the length of the building is unnoticeable, as the photograph shows.

1988 G. McCaughrean Pack of Lies iv. 47 During the Ch'ing dynasty..a woman learned to be silent and unnoticeable in the eyes of men.

2008 Chicago Tribune 21 Apr. (Midwest Final ed.) iii. 4/1 While information is nearly always lost when signals are compressed and then uncompressed, the process can theoretically be made unnoticeable to eyes and ears.

1883 Harper's Mag. Sept. 566/1 Unnoticeableness..is..the character..of the dwellings.

1966 Times 13 Oct. 18/7 The pawnbroker (played with brave attempts at unnoticeableness by that congenitally ‘big’ actor Rod Steiger).

1990 Folia Geobotanica & Phytotaxonomica 25 408 For their immediate unnoticeableness and our limited knowledge (lack of long-term measurements) they are the more dangerous.

1853 Observer 10 Apr. 6/4 Witness..went roundabout to get Graves unnoticeably out of the town.

1885 ‘E. Garrett’ At Any Cost xv One seal was broken! So cleanly, too, that she almost thought it might be mended unnoticeably.

1967 Anuario 3 129 Lemon Drops..slips unnoticeably into a casual cocktail jazz-style.

2012 P. Gevorkian Large-Scale Solar Power Syst. iv. 35 Tall buildings located at a distance of a mile away may unnoticeably cast a shadow on a solar power system.