SYN: Merciless, unrelenting, implacable, unalterable.
ANT: Lenient, exorable, indulgent, benignant, clement.
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KEY: Inexpedient.
SYN: Undesirable, inadvisable, disadvantageous.
ANT: Advisable, profitable, expedient.
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KEY: Inexpensive, [See EXPENSIVE].
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KEY: Inexperience.