delight [ME] For the first three centuries of its life delight was spelled delit, as was its French original. The -gh- spelling emerged in the 16th century, on the model of light and other native English words. Delight has no direct connection with *light, though, but goes back ultimately to Latin delectare ‘to charm, entice’.

The first known written record of Turkish delight is from 1872. Delicate [LME] goes back to Latin delicates, a word with many meanings including ‘addicted to pleasure, elegant, dainy, not robust’ which may be from the same root as delectare.