[f. THWACK v. + -ING2.] That thwacks; that is a thwacker; big, strong, forcible; thumping, whacking.
1567. Drant, Horace, De Arte Poet., A iij. Put out no puffes, nor thwackyng words, words of to large assyce.
1620. Middleton, Chaste Maid, V. iii. Sec. Serv. A bonfire, Sir? Sir Oliver. A thwacking one, I charge you.
1671. H. Foulis, Hist. Rom. Treas. (1681), 42. After all these thwacking Arguments.
1682. H. More, Annot. Glanvill’s Lux O., 191. In vertue of which thwacking expressions he has fancied himself able to play at Scholastick or Philosophick Quarter-Staff.
1890. Daily News, 17 Dec., 5/7. Then … came a thwacking blow from Dr. Tanner’s blackthorn.
Hence Thwackingly adv.
1660. H. More, Myst. Godl., VI. xvii. 270. In riveting the Godhead into his own person so thwackingly and substantially, as that he may give the World to understand that he was as much God as that Christ that died at Jerusalem.
