subtle
Meaning
so delicate or precise as to be difficult to analyze or describe.
making use of clever and indirect methods to achieve something.
capable of making fine distinctions.
Usage
the painting's background features subtle shades of blue and grey.
she used subtle hints to guide him toward the correct answer.
there is a subtle but important difference between the two legal terms.
Etymology
the word 'subtle' originates from the latin 'subtilis', meaning 'fine, thin, delicate'. this itself was formed from 'sub' (under) and 'tela' (a web), literally meaning 'woven fine' or 'under the web', evoking the image of a finely-spun thread. it entered english via old french 'soutil' or 'subtil', where the 'b' was silent, influencing the modern english pronunciation. the spelling later re-inserted the 'b' to reflect the latin etymology, but the meaning evolved from the physical sense of 'finely woven' to the abstract intellectual qualities of being elusive, perceptive, and ingenious.
Analysis
the word 'subtle' is a simplex form. its spelling and sound have been significantly altered from its latin root, making segmentation into meaningful english substrings misleading.