KEY: Ineffable.

SYN: Inexpressible, inconceivable, insurpassable, indeclarable, indescribable, exquisite, perfect.

ANT: Common, trivial, superficial, vulgar, conversational, colloquial, obvious, commonplace.

=

KEY: Ineffectual.

SYN: Fruitless, useless, vain, idle, unavailing, abortive, inoperative, ineffective.

ANT: Effective, effectual, successful, [See EFFECTIVE].

=

KEY: Inelastic, [See ELASTIC].

=