What does forewarned mean?
Forewarned means having received advance notice of a danger, difficulty, or unpleasant surprise before it arrives. It functions as the past participle of the verb 'forewarn', which combines the prefix 'fore-' (meaning 'before' or 'in advance') with 'warn'. The word survives today largely through one of the English language's most durable proverbs, 'forewarned is forearmed', meaning that someone who knows what is coming can prepare for it. The idea behind the phrase is far older than its English wording: the Roman playwright Plautus expressed essentially the same sentiment more than two thousand years ago. In tone, being forewarned implies readiness and prudence rather than fear — it frames information as a form of protection. Whether applied to weather forecasts, business risks, or personal caution, 'forewarned' captures a simple truth: knowing trouble is on the way is often the best defense against it.
Alerted in advance to a danger, difficulty, or unwelcome event.
"Being forewarned of the merger's fallout, she updated her résumé early."
Almost always encountered in the proverbial expression 'forewarned is forearmed'.
The past participle form of the verb 'forewarn', used to indicate that someone has already been given prior warning.
"We had been forewarned about the delays, so nobody complained when the flight was late again."
Rarely used as a finite verb form; 'to forewarn' is the standard active usage.
"Forewarned is forearmed" — a proverb so old it traces back over two millennia to the Roman playwright Plautus, who wrote "prudens ante contrahit vim, quam quis subito adversario."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of forewarned
The word derives from the verb 'forewarn', formed within English by combining the native prefix 'fore-' with the Old English verb 'warnian', which meant to take heed or give warning. The prefix 'fore-' has long signified anticipation in English, appearing in words such as 'foreshadow' and 'forecast'. The underlying root traces back to Proto-Germanic forms concerned with vigilance and guarding, making 'forewarned' a cousin of other watchfulness words like 'beware'. The proverb 'forewarned is forearmed' reflects a classical antecedent in Plautus's Latin, adapted into English vernacular speech.
Related word forms
How forewarned is actually used
'Forewarned' appears almost exclusively as the past participle of the verb 'forewarn', most famously in the proverb 'forewarned is forearmed'. It carries a pragmatic, cautionary connotation rather than an alarming one — it suggests preparedness rather than panic.