rat- root words — words with the rat- root

The root rat- comes from Latin reor, meaning reckon, reason. 10 words in Dendril are built from it, including rate, rates, rated, rating, ratio, rational, rationale, rationally, ratios, irrationality. Dendril shows them on a free interactive word map — no signup, no ads.

Words that use the rat- root

Explore words with rat- — words containing the rat- root and sharing its sense of "reckon, reason". Examples include rate, rates, rated, rating, ratio, rational, rationale, rationally, ratios, irrationality. Click any word to see its own roots, definition, and related words.

What does rat- mean?

The rat- root means reckon, reason, from Latin reor. Recognizing it helps you decode and remember the many English words built on this root.