What this suffix does
-let comes from French "-elet" (double diminutive: -el + -et) and forms nouns denoting something smaller or of lesser importance than the base form. booklet = a small book, a pamphlet (book + let). droplet = a very small drop (drop + let). rivulet = a small stream (from French "riviere" + let). islet = a small island (isle + let). piglet = a young pig (pig + let).