• well behaved

From well +‎ behaved.

• IPA^(key): /wɛlbɪˈheɪvd/, /wɛlbəˈheɪvd/

• Audio (US):

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well-behaved (comparative better-behaved or more well-behaved, superlative best-behaved or most well-behaved)

1. Having good manners and acting properly; conforming to standards of good behaviour.

   Synonyms: mannersome, seemly, well-mannered

   Antonym: ill-behaved

   Hyponym: polite

   The boy is well-behaved and is seldom naughty.

   • 1842, [Katherine] Thomson, chapter II, in Widows and Widowers. A Romance of Real Life., volume II, London: Richard Bentley,[…], →OCLC, page 35:

     How bright were the fire-irons; how clean the Dutch riles round the old-fashioned fire-place, how well-behaved even the cat.

   • 1986, InfoWorld, volume 8, number 43, page 69:

     Remember that well-behaved software always keeps its hands off the computer's hardware.

2. (mathematics) Having intuitive, easy to handle properties, especially: having a finite derivative of all orders at all points, and having no discontinuities.

   Antonyms: degenerate, pathological

• well-behavedly
• well-behavedness

• well-posed