From Middle English on-handed, variant of Middle English on-hande, onehand, from Old English ān-hende (“one-handed”), surface analysis one + handed. Compare German einhändig (“one-handed”), Swedish enhänt, en-handad (“one-handed”), Icelandic einn-hönd (“one-handed”).
- Having only one hand.
- Performed using only one hand.
2011 September 24, David Ornstein, “Arsenal 3 - 0 Bolton”, in BBC Sport:
- A one-handed save by Wojciech Szczesny prevented Darren Pratley giving Bolton an early lead and Arsenal looked short of ideas in a goalless first half.
- Designed for use with one hand
2012, Theodore Ayrault Dodge, Alexander: A History of the Origin and Growth of the Art of War from the Earliest Times to the Battle of Ipsus, B.C. 301, With a Detailed Account of the Campaigns of the Great Macedonian, ISBN 1623580072:
- The hoplites were pezetæri, the sarissa-armed, and hypaspists, a more select body, aimed with one-handed pike, sword and shield.
- That uses one hand.
2015, William Hamilton, My Sixty Years on the Plains: Trapping, Trading, and Indian Fighting, ISBN 1632200562:
- The one-handed shooter, the target man who fires the national match course, turns about 45 degrees from the target, separates his feet about the same distance, fully extends his hand, locking the elbow, and with head and body erect looks over the sights.
- Involving the actions of only one person.
1884, Good Words Volume 25, page 67:
- Holding intercourse with Sir William at this date partook a good deal of the nature of a one-handed conversation, and the one-handedness seemed to increase when the only share of the host, in the post-prandial conviviality, consisted in passing the decanters, which Sir William was scrupulous to do.
- (chemistry) Chiral, having an asymmetric structural orientation.
2010 November, PD Barata, AI Costa, LFV Ferreira & JV Prata, “Synthesis, structure, and optical properties of an alternating calix  arene-based meta-linked phenylene ethynylene copolymer”, in Journal of Polymer Science Part A: Polymer Chemistry, volume 48, number 22, page 5040:
- Because of the m-phenylene linkage along the polymer main chain, the inherent propensity to generate foldamers has been explored in several ways, and the induction of one-handed polymer helicity been achieved.
one-handed (not comparable)
- Using only one hand.
- She waved to us and lost her balance; riding a bicycle one-handed is tricky.
2010, Tom Clancy, Patriot Games:
- Doing it half-drunk wasn't all that hard. Doing it one-handed was hard but not insurmountable. Doing it one-handed and half-drunk was...The damned screws didn't want to stay in the plastic, and the instructions for putting a V-8 engine together had to be easier than this!
- (figuratively) Very easily, without effort.
- He's a terrible snooker player. I could beat him one-handed!