Definition & Meaning of "indefensible"

indefensible

ADJECTIVE

(of theories) lacking a sustainable evidentiary or rational basis against challenges to its validity

Example

The theory that the earth is flat is indefensible in the face of clear geological and astronomical evidence that demonstrates our planet is spherical.

Once Einstein published his paper on general relativity in 1915, Newtonian mechanics became indefensible as the sole explanatory framework for phenomena like Mercury's orbit.

cannot be justified or reasonably defended due to lacking ethical, logical or valid reasons

Example

The decision to fire employees without cause left the company open to lawsuits since its actions were clearly indefensible.

Citing conspiracy theories as evidence, the senator proposed indefensible claims that lacked legitimate factual support.

not able to be protected against attack

word family

defend

Verb

defense

Noun

defensible

Adjective