Meaning & Analysis
Advance warning equips a person for danger; knowing beforehand furnishes a significant part of the necessary defense.
Insights
Preparedness
Treats information as armor: when threats are anticipated, one can choose tools, allies, and tactics, turning knowledge into protection.
Risk reduction
Early detection shrinks exposure—hazards are not eliminated, but their impact is halved by time to plan, rehearse, and harden weak points.
Cognitive rehearsal
Imagining failure modes (‘premortem’) builds mental defenses; forewarning primes vigilance and speeds the right reflexes when pressure comes.
Strategic timing
Knowing when danger approaches lets one pick the ground—delay, divert, or strike first—turning surprise into initiative.
Social prudence
Warnings about persons or politics cue boundaries and contingency plans; foreknowledge prevents being trapped by flattering appearances.
Classical lineage
The Latin tag ‘Praemonitus praemunitus’ (forewarned, forearmed) capsulates a Roman-styled ethic of measure and readiness, echoed in Renaissance collections.
Martial metaphor
‘Armed’ is metonymic: weapons stand for any countermeasure—locks, savings, evidence, backups—so the soldier’s image universalizes to civic life.
Shakespearean uptake
Dramatic phrasing like ‘I will arm me, being thus forewarn’d’ frames knowledge as immediate cause of action, not mere contemplation.
Cost–benefit of vigilance
Warnings carry false-alarm costs, yet the proverb’s bias is clear: the expense of readiness is cheaper than the shock of surprise.
Moral psychology
Preparedness cultivates steadiness; once a threat is named, panic abates and roles clarify—forewarning organizes courage.
Rhetorical Devices
Alliteration
‘Forewarned, forearmed’ binds the counsel in a memorable f–f chime that sticks in the ear.
Isocolon & parallelism
Balanced, twin clauses mirror the causal chain—warning leads to arming—delivering the lesson with rhythmic symmetry.
Metonymy
‘Armed’ stands for any form of preparedness (plans, tools, proofs), broadening the martial image to everyday safeguards.
Antithesis (implied)
Sets foreknowledge against surprise: one halves harm; the other amplifies it.
Aphoristic compression
Few words pack procedure (hear—prepare—withstand) into a portable rule.
Transcription
Quotations
He that is admonisshed is halfe armede.
He that is warned ys half armed.
Half warnd, half armd.
Forewarned, halfe armed.
A man that is warned is halfe armed.
[As in 1546 Hey.].
[As in 1546 Hey.].
He that is warn'd is halfe arm'd.
A man warned is halfe armed.
He that is well warned, is halfe armed.
[As in 1616 Bret.].
[As in 1546 Hey.].
Forewarnd, half armd.
Fore-warn'd, fore-arm'd.
[As in a1598 Ferg.].
Forewarnd forearmed. Praemonitus praemunitus.
Forewarn'd, forearm'd.
Shakespeare Citations
I will arm me, being thus forewarn'd.
Cross References
Annotations
- See the proverb, Better late than never (L124).
Related Proverbs
Original Scan


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