/prɪˈdɪkt/
[verb] To say that something will happen in the future, before it actually does. You predict something based on what you know, what you can see, or what you believe.
Every time you predict something, you are literally 'saying it before' — the word is a tiny time machine built from Latin.
The word 'predict' comes from the Latin verb 'praedicere', which meant to say or proclaim something beforehand. This Latin word was built from two parts: the prefix 'prae-', meaning 'before' or 'in front of', and the verb 'dicere', meaning 'to say' or 'to speak'. So at its heart, 'predict' simply means 'to say before' — to put words to something that has not yet happened.
The root 'dicere' is one of the most productive roots in the entire Latin language, and it spread into English through multiple pathways. Latin 'dicere' became Old French 'dire', and from that same Latin root, English eventually received words like 'diction', 'dictionary', and 'dictate'. The prefix 'prae-' also appears in many other English words borrowed from Latin, such as 'prepare', 'prevent', and 'precede', all of which carry that same sense of something coming first or happening ahead of time.
The word entered English in the early 16th century, drawn directly from the Latin past participle 'praedictus', meaning 'said beforehand'. It was initially used in learned and religious writing, where scholars and theologians would speak of prophecies — divine predictions about the future. In those early days, the word carried a slightly grander, more solemn weight than it does today, often connected to prophets, oracles, and the language of scripture.
Over the following centuries, 'predict' gradually moved out of sacred contexts and into everyday use. Scientists, mathematicians, and philosophers began using it to describe the business of reasoning from evidence toward a conclusion about the future. By the time of the Enlightenment in the 17th and 18th centuries, predicting had become the very goal of science itself — to observe patterns and then say, with confidence, what would happen next. The word shed its mystical clothing and put on something more rational.
Today, 'predict' sits comfortably in nearly every corner of modern life. Weather forecasters predict storms, economists predict recessions, and sports commentators predict scores. The word has also given English the noun 'prediction', the adjective 'predictable', and the negative 'unpredictable' — a word used so often it has almost become a cliché. Interestingly, the closely related word 'predicament', which now means a difficult situation, shares the same Latin root 'praedicare', a variant of 'praedicere', showing how a word about speaking can drift into meaning something about being trapped.