Tautly

adv. [f. TAUT a. + -LY².] In a taut manner; with tautness.

1868.  H. Howe, Odds & Ends, chap. F, 100–1. With a crack of his whip, he circled into their midst, and then pulling back tautly on the lines, hallo’d ‘Whoa!’

1882.  Nares, Seamanship (ed. 6), 182. The bunt … will not allow the parrel to be passed tautly.

1882.  O’Donovan, Merv Oasis, I. i. 20. A very thick cable … is drawn as tautly as possible across the stream.