Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
forewarn 4277 - proepo {pro-ep'-o}; from 4253 and 2036; to say already, to predict: -- {forewarn}, say (speak, tell) before. Compare 4280.
forewarn 4302 - prolego {prol-eg'-o}; from 4253 and 3004; to say beforehand, i.e. predict, {forewarn}: -- foretell, tell before.