- plural form of subtlety
The definition of subtleties are nuances, fine point details or small but distinguishing features.
The small, but unique, details about Mona Lisa's smile that make the Mona Lisa such a captivating painting are an example of subtleties.
- In this, a genuine work of the Renaissance, Cano endeavours to free dogmatic theology from the vain subtleties of the schools and, by clearing away the puerilities of the later scholastic theologians, to bring religion back to first principles; and, by giving rules, method, co-ordination and system, to build up a scientific treatment of theology.
- His work in black-and-white, his admirable illustrations in brushwork of Edinburgh and its neighbourhood, and also his pen-drawings, about which it has been declared that "his work contains all the subtleties and refinements of a most delicate etching," must also be noted.
- His penetrating intellect had mastered the subtleties of the system of Chrysippus, but they seldom appear in his works, at least without, apology.
- From the subtleties of rival systems it is a satisfaction to turn to two movements in the medicine of the 18th century which, though they did not extinguish the spirit of system-making, opened up paths of investigation by which the systems were ultimately superseded.
- Unfortunately the lesson which his contemporaries learnt was not the importance of experiment, but only the need of contriving ether" systems "less open to objection; and thus the influence of Haller led directly to the theoretical subtleties of William Cullen and John Brown, and only indirectly and later on to the general anatomy of M.