SYN: Frailty, sinfulness.
ANT: Impeccability, perfection.
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KEY: Peccable.
SYN: Frail, sinful.
ANT: Impeccable, perfect, incorrupt.
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KEY: Peccant.
SYN: Morbid, corrupt, criminal, offensive, objectionable, vicious, erring, guilty, transgressing.
ANT: Pure, incorrupt, wholesome.