English Synonyms Practice Test 4

Subtle : (especially of a change or distinction) so delicate or precise as to be difficult to analyse or describe.
Clear : easy to perceive, understand, or interpret.
Quickening : make or become faster or quicker.
Lively : full of life and energy; active and outgoing.
Nimble : quick and light in movement or action; agile.

Synonym of Nimble is Quickening