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1. Unpredictability.
2. Philosophy The doctrine that there are events, particularly free human actions or decisions, that have no cause or are not caused deterministically.

in′de·ter′min·ist n.
in′de·ter′min·is′tic adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Philosophy) the philosophical doctrine that behaviour is not entirely determined by motives
ˌindeˈterminist n, adj
ˌindeˌterminˈistic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌɪn dɪˈtɜr məˌnɪz əm)

a theory that human actions, though influenced by preexisting conditions, are not entirely governed by them.
in`de•ter′min•ist, n., adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


the quality of not being clearly established or fixed. — indeterminist, n.indeterministic, adj.
See also: Attitudes
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
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References in periodicals archive ?
According to indeterminist libertarianism, free will, moral responsibility, and social activism are incompatible with determinism pertaining to human behavior.
It tempts the radical indeterminist into an intellectual and political desert, and abandons him there alone, disoriented, disarmed, and, at last, corrupted--by powerlessness." Roberto Unger, What Should Legal Analysis Become?
This indeterminist thesis is relatively unpopular in policy, parenting, and even some academic circles ...
Wallace rejects indeterminist (libertarian) inflated-FW on the ground that the Buddha rejected pure chance (59-60), but Robert Kane and other libertarians have sophisticated versions of indeterminism that differentiate it from "pure chance." (94)
While this causal model was inappropriate for the second (probabilistic) phase of modern science, it was quite some time before indeterminist probabilistic analyses of causation were developed.
Chrysippus' account of human action in Aulus Gellius, Noctes atticae, 7.2.6-13 [LS 62D] and Alexander's and Nemesius' criticisms (fully justified from an indeterminist standpoint) in Alexander, De fato, 196.22-197.2 and Nemesius, De natura hominis, 34.46-9.
Rychlik knew about Cage and was aware of the historical connections that link his indeterminist and mutually combinable compositions to the compositional principles of the Renaissance, as he put it in his study Proky novych skladebnych technik v hudbe minulost, v hudbe exoticke a lidove, (Elements of new compositional techniques in the music of the past, in exotic and folk music), which was published posthumously, within the volume Nove cesty hudby (New Ways of Music, SITV, Prague 1964).
The Sorites paradoxes are associated with Eubulides of Miletus (fourth century B.C.) and they say that there is not a clear frontier between visible and invisible matter, determinist and indeterminist principle, stable and unstable matter, long time living and short time living matter.
This began to steer the helm towards an indeterminist conception, heightened by the formation of careers in psychology stressing a psychoanalytic perspective, which lasts to this day (Papini, 1978).
--" Indeterminist" mathematical models are operational when the volume and accuracy of available data are lower: