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KEY: Incidence.

SYN: Impingement, impact, stroke.

ANT: Reflection, resilience, rebound.

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KEY: Incident, [See INCIDENCE and EVENT].

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KEY: Incidental.

SYN: Casual, occasional, appertinent, concomitant, concurrent, accidental, fortuitous.

ANT: Systematic, regular, independent, disconnected, irrelative, essential, immanent, inherent, uniform, invariable.