ironclad
Definition
Extremely strong or secure; unable to be broken or altered.
Español Extremadamente fuerte o seguro; imposible de romper o alterar.
Example
"She had an ironclad alibi that proved she wasn't at the scene of the crime."
Extremely strong or secure; unable to be broken or altered.
Español Extremadamente fuerte o seguro; imposible de romper o alterar.
"She had an ironclad alibi that proved she wasn't at the scene of the crime."