SYN: Letter, write, label, designate, delineate, mark, imprint, engrave, dedicate, address.
ANT: Erase, efface, cancel, obliterate, expunge.
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KEY: Inscroll.
SYN: Enlist, register, enroll, pattern, flourish, record, calendar.
ANT: Erase, disenroll, cashier, expunge, obliterate, efface, deface.
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KEY: Inscrutable.
SYN: Unintelligible, untraceable, mysterious, unfathomable, profound, insolvable, impenetrable, hidden.
ANT: Obvious, self-evident, familiar, intelligible, explainable.