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KEY: Preserve.
SYN: Defend, guard, save, keep safe, uphold, protect, maintain, rescue, spare, [See PROTECT].
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KEY: Preside.
SYN: Manage, superintend, direct, control, govern, [See MANAGE].
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KEY: President.
SYN: Chairman, moderator, principal, superintendent.
ANT: Member, subordinate, constituent, corporation, society, ward, institution.