[First published 09/2016; substantive revision 02/2021.] Evaluative terms and concepts are often divided into “thin” and “thick”. We don’t evaluate actions and persons merely as good or bad, or right or wrong, but also as kind, courageous, tactful, selfish, boorish, and cruel. The latter evaluative concepts are "descriptively thick": their application somehow involves both evaluation and a substantial amount of non-evaluative description. This article surveys various attempts to answer four fundamental questions about thick terms and concepts. (1) A “combination question”: (...) how exactly do thick terms and concepts relate evaluation and non-evaluative description? (2) A “location question”: is evaluation somehow inherent to thick terms and concepts, such as perhaps an aspect of their meaning, or merely a feature of their use? (3) A “delineation question”: how do thick terms differ from the thin and from other kinds of evaluative terms? (4) Given answers to these questions, what broader philosophical significance and applications might thick concepts have? (shrink)

The descriptions 'good' and 'bad' are examples of thin concepts, as opposed to 'kind' or 'cruel' which are thick concepts. Simon Kirchin provides one of the first full-length studies of the crucial distinction between 'thin' and 'thick' concepts, which is fundamental to many debates in ethics, aesthetics and epistemology.

This is an open access title available under the terms of a CC BY-NC-ND 4.0 International licence. It is free to read at Oxford Scholarship Online and offered as a free PDF download from OUP and selected open access locations. We use evaluative terms and concepts every day. We call actions right and wrong, teachers wise and ignorant, and pictures elegant and grotesque. Philosophers place evaluative concepts into two camps. Thin concepts, such as goodness and badness, and rightness and wrongness (...) have evaluative content, but they supposedly have no or hardly any nonevaluative, descriptive content: they supposedly give little or no specific idea about the character of the person or thing described. In contrast, thick concepts such as kindness, elegance and wisdom supposedly give a more specific idea of people or things. Yet, given typical linguistic conventions, thick concepts also convey evaluation. Kind people are often viewed positively whilst ignorance has negative connotations. The distinction between thin and thick concepts is frequently drawn in philosophy and is central to everyday life. However, very few articles or books discuss the distinction. In this full-length study, Simon Kirchin discusses thin and thick concepts, highlighting key assumptions, questions and arguments, many of which have gone unnoticed. Kirchin focuses in on the debate between 'separationists' and 'nonseparationists'. Thick Evaluation argues for a version of nonseparationism, and in doing so argues both that many concepts are evaluative and also that evaluation is not exhausted by thin positive and negative stances. (shrink)

This entry addresses the question of whether justice is thick, thin, or neither. It discusses three main ways of understanding the difference between thick and thin – Williams’ 1985 distinction, the Continuum Approach, and Hare’s distinction. The question of how to classify justice turns out to be a problem for Williams’ 1985 distinction. If the Continuum Approach is correct, it’s far from clear why it would matter whether a given concept is classified as thick, thin, or neither. Hare’s distinction, on (...) the other hand, allows for a strong case to be made for the claim that “justice” is thick. And if “justice” is thick, in Hare’s sense, then there are at least two potential implications. The first is that justice might be a genuine value property, assuming it’s impossible for “just” to have a value-neutral counterpart. The second is that there might be intractable intercultural disagreements about what things are just. (shrink)