IPA: /ˈspɛkjʊleɪt/
KK: /ˈspɛk.jə.leɪt/
To think about something and make guesses or ideas about it without having all the facts.
Many people speculate about the reasons for his sudden departure.
Past: speculated
Past Participle: speculated
Speculate → It is formed from "specere" (meaning to look or see) and the suffix "-ate" (indicating to cause or make). The word "speculate" means to look at something in a thoughtful way, often to form theories or conjectures without firm evidence.
Think of 'looking' ('specere') thoughtfully at something to form ideas or theories — that's what it means to speculate.