What does defensible mean?
Defensible is an adjective describing something that can be defended — either literally, as a fortified position that can withstand attack, or far more commonly today, figuratively, as a decision, claim, or course of action that can be justified with sound reasoning or evidence. A defensible argument is one that survives scrutiny; a defensible choice is one you could explain and stand behind if challenged. The word carries a connotation of rational rigour rather than moral perfection: something may be defensible without being ideal, merely capable of being legitimately argued for. It appears frequently in law, academia, policy debate, and everyday discussion of contested decisions. Derived from the Latin defendere, 'to ward off,' via Old French defensable, it entered English in the medieval period alongside its sibling defensive, from which it should be carefully distinguished.
adjectiveCapable of being defended, especially against attack or criticism; justifiable by argument or evidence.
- Capable of being defended against physical attack.
- Able to be justified by argument, evidence, or reason; not open to serious criticism.
"The lawyer argued that her client's actions were perfectly defensible under the circumstances."
"The fortress occupied a highly defensible position on the clifftop."
"The committee concluded that the spending cuts were defensible given the budget shortfall."
In law, a 'defensible position' can win a case — but in chess, it might be the only thing standing between you and checkmate.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of defensible
Defensible derives from Latin defendere, meaning 'to ward off, protect,' formed from de- ('from, away') plus fendere ('to strike'). It entered Middle English through Old French defensable around the fourteenth century, initially in the literal sense of a place able to withstand attack. Over time the figurative sense — an action or opinion that can be justified — became dominant. It is closely related to defend, defensive, and defence (or defense), all descendants of the same Latin root.
Related word forms
How defensible is actually used
Register is neutral-to-formal; the word is common in legal, academic, and professional writing. The figurative sense (capable of justification) is now far more frequent than the literal military sense.
Easily confused with defensible
'Defensive' describes serving to protect or guard against attack, while 'defensible' describes something that can be justified or successfully defended.