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Webster 1913 Edition

Adj.

Marked by, or causing, complacence.

[Obs.]

“Complacential love.”

Baxter.

Adj.

Marked by complacence; accommodating.

complacential ‎(comparative more complacential, superlative most complacential)

(obsolete) Marked by, or causing, complacence.
Complacential love. — Baxter.