Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Changing or varying, especially often and without discernible pattern or reason.
  • adj. Fickle; faithless.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Not constant; wavering.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Not constant; not stable or uniform; subject to change of character, appearance, opinion, inclination, or purpose, etc.; not firm; unsteady; fickle; changeable; variable; -- said of persons or things.

from The Century Dictionary and Cyclopedia

  • Not constant; subject to change; not firm; unsteady; fickle; capricious: said chiefly of persons: as, inconstant in love or friendship.
  • Synonyms Unstable, vacillating, wavering, volatile, unsettled, uncertain.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. likely to change frequently often without apparent or cogent reason; variable

Etymologies

in- +‎ constant (Wiktionary)

Examples

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