Answer: ironclad

AnswerCrossword Clue
IRONCLADWithout loopholes
ironcladcovered or cased with iron plates, as a ship for naval warfare; armor-plated
ironcladan armored warship
ironcladvery rigid or exacting; inflexible; unbreakable
ironcladwooden warship of the middle or late 19th century having iron or steel armor plating
IRONCLADLike the "Constitution"?
IRONCLADRigid
IRONCLADUnbreakable, as a rule
IRONCLADAirtight
IRONCLADDifficult to change or break
IRONCLADKind of alibi.
IRONCLADUnbreakable, as a lease.
IRONCLADSolid, in a sense
IRONCLADLike the "Monitor" or the "Merrimac"
IRONCLADInflexible
IRONCLADArmor-plated
IRONCLADAirtight, as an alibi
IRONCLADLike the Monitor or the Merrimack
IRONCLADLike some alibis
IRONCLADLacking loopholes
IRONCLADLike a good alibi
IRONCLADRigid, as a contract
IRONCLADLike an inflexible agreement
IRONCLADUnbreakable, as a contract
IRONCLADCivil War fighting ship
IRONCLADUnbreakable