Davidson 1996

Donald Davidson, "The Folly of Trying to Define Truth," The Journal of Philosophy, Vol. 93, No. 6, 1996.

however feeble or faulty our attempts to relate these various basic concepts to each other, these attempts fare better, and teach us more, than our efforts to produce correct and revealing definitions of basic concepts in terms of clearer or even more fundamental concepts. (p. 264)

Truth is...an indefinable concept. This does not mean we can say nothing revealing about it: we can, by relating it to other concepts like belief, desire, cause, and action.(p. 265)