different between flimsy vs unsound

English

Etymology

Origin uncertain. First used in the 18th century. Perhaps a metathesis of film +? -s +? -y; or related to flimflam.

Pronunciation

• IPA^(key): /?fl?mzi/

Adjective

flimsy (comparative flimsier or more flimsy, superlative flimsiest or most flimsy)

1. Likely to bend or break under pressure.

   Synonyms: weak, shaky, flexible, fragile

   Antonyms: robust, strong, sturdy

   • 1715, Richard Brinsley Sheridan, The Rivals

     All the flimsy furniture of a country miss's brain.

2. (figuratively) Weak; ill-founded.

   Synonyms: weak, feeble, unconvincing

   Antonyms: well-founded, substantiated

Translations

Noun

flimsy (plural flimsies)

1. Thin typing paper used to make multiple copies.
   • 1977, John Le Carré, The Honourable Schoolboy, Folio Society 2010, p. 251:

     Smiley peered once more at the flimsy which he still clutched in his pudgy hand.

2. (naval slang) A service certificate
   • 1964, Australia. Parliament, Records of the Proceedings and Printed Papers of the Parliament

     A perusal of the comments of officers under whom he has served as recorded in his “flimsies" indicates that he has almost consistently received high commendation for his service.

   • 1994, John Wells, The Royal Navy: An Illustrated Social History, 1870-1982 (page 7)

     Regulations required a commanding officer to render annual confidential reports on the character and ability of his officers - with particular reference to sobriety - on forms known as 'flimsies'.

3. (informal, in the plural) Skimpy underwear.
4. (slang) A banknote.

Translations

English

Etymology

un- +? sound.

Pronunciation

• enPR: ?n-sound?, IPA^(key): /??n?sa?nd/
• Rhymes: -a?nd

Adjective

unsound (comparative more unsound or unsounder, superlative most unsound or unsoundest)

1. Not sound, particularly:
   1. Not whole, not solid, defective.
   2. (especially of equestrianism) Infirm, diseased.
   3. (Britain, especially of people) Not good, unreliable.
      • 1919, P.G. Wodehouse, My Man Jeeves:

        You would not like Nietzsche, sir. He is fundamentally unsound.

Antonyms

• sound

Derived terms

• unsoundly
• unsoundness