1681 W. Robertson Phraseologia generalis (1693) 611 Flatted or made flat, æquatus.

1700 J. Dryden tr. Ovid Ceyx & Alcyone in Fables 366 Then frothy White appear the flatted Seas.

1716 A. Pope tr. Homer Iliad II. v. 121 The yellow Harvests..And flatted Vineyards, one sad Waste appear.

1730 J. Thomson Autumn in Seasons 142 The fields around Ly sunk, and flatted, in the sordid wave.

1578 J. Banister Hist. Man i. f. 28 The inferiour part of Radius..is not onely at the end flatted, but also ample, large.

1650 T. Bayly Worcesters Apophthegmes 47 Turning the flatted bullet round with his finger.

1797 W. Johnston tr. J. Beckmann Hist. Inventions & Discov. II. 232 Flatted metal wire began to be spun round linen or silk thread.

1812 J. Smyth Pract. of Customs ii. 57 Coffee..is convex on one side, and flatted on the other, with a deep furrow, which runs along the flatted side.

1879 W. Collins Rogue's Life ix. 104 He turns out a tolerably neat article, from the simple flatted plates.

1805 R. W. Dickson (1807) II. 161 The hurdles..are generally of two kinds, either flatted or rodded.

1626 F. Bacon Sylua Syluarum §377 An Orenge, Limon and Apple..fresh in their Colour, But their Iuyce somewhat flatted.

1851 Orders & Regulations Royal Engineers (rev. ed.) xix. 89 Two rooms flatted or French grey.

1859 T. J. Gullick & J. Timbs Painting 243 A ‘flatted’, dull, or unshining surface.

1938 Oxf. Compan. Music 322 Flat... There is a slight difference of usage in the language of Britain and the United States—in the former ‘to flatten’ and ‘flattened’; in the latter ‘to flat’ and ‘flatted’.

1949 L. Feather Inside Be-bop ii. 50 The ‘blue’ (flatted) seventh was used incidentally.

1956 L. Feather Encycl. Jazz (new ed.) 27 In California in 1940 Oscar Moore, guitarist with the King Cole trio, ended the group's first Decca record, Sweet Lorraine, on a ninth chord with a flatted fifth.

1958 A. Jacobs New Dict. Music 127 Flattened seventh (U.S., flatted seventh), the lowering of the seventh degree of the scale by a semitone.

1913 Chambers's Etym. Dict. Suppl. Concierge,..a door-keeper, esp. in a flatted house.

1921 Glasgow Herald 28 Jan. 10 English visitors..are sometimes astonished at our flatted houses.

1941 When we build Again (Bournville Village Trust) 107 Many of these numerous small factories are grouped in districts. From the planner's point of view this..makes possible a consideration of the job in terms of units. The solution suggested here for this state of affairs is the ‘flatted’ factory.

1957 Times 22 Aug. 8/7 Some form of ‘flatted factories’ to cater for the smaller businesses which need more room.

1962 D. Tench Law for Consumers vii. 106 The purchase and sale of flatted property has for a long time been a feature of Scottish life.

1970 ‘D. Craig’ Young Men may Die xiv. 93 Opposite is another old flatted mansion.