Thesaurus / indefectible
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

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Under these varying 226 modes and presentations it permanently abides as the indefectible substance of the spirit.
THE REFORM OF EDUCATIONGIOVANNI GENTILE
Indefectible, in-de-fekt′i-bl, adj. incapable of defect: unfailing.
The church is therefore, by her own divine constitution, by the very principle and law of her existence, indefectible.
The mechanism of the United States, like that of the universe, reposes on indefectible laws and uncontrollable forces.
THE ARENAVARIOUS
And since at no time must it cease to teach, it must be indefectible.

WORDS RELATED TO INDEFECTIBLE

Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.