The root DICT comes from the Latin verb dicere, meaning “to say” or “to speak.” It appears in over 20 common English words including dictate, dictionary, predict, contradict, verdict, and edict. Knowing DICT instantly unlocks an entire family of words related to speaking, declaring, and the power of language.
Greek root words are the foundation of scientific, medical, and philosophical English vocabulary. Over 150,000 English words — particularly in biology, medicine, astronomy, mathematics, and philosophy — trace directly to ancient Greek. Understanding Greek roots like PHON (sound), BIO (life), GRAPH (write), ASTER (star), and LOGY (study of) unlocks entire fields of academic vocabulary.
Latin root words form the backbone of roughly 29% of the English vocabulary — rising to nearly 60% when you include words that entered English through French. From law and medicine to everyday words like “act,” “port,” and “dict,” learning Latin roots is the single most efficient way to expand your English vocabulary. This guide covers 200+ Latin roots, prefixes, and suffixes with examples.