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Webster 1828 Edition

Noun.

A state of being impaired; decayed state.

DECA'YER, n. That which causes decay.

DECA'YING, ppr. Failing; declining; passing from a good, prosperous or sound state, to a worse condition; perishing.

DECA'YING, n. Decay; decline.

DECE'ASE, n. [L. to depart or to withdraw.] Literally, departure; hence, departure from this life; death; applied to human beings only.

decayedness ‎(uncountable)