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Webster 1913 Edition

Adj.

Inclined to pester. Also, vexatious; encumbering; burdensome.

[Obs.]

Bacon.

Adj.

Encumbering; burdensome. [Little used.]

pesterous ‎(comparative more pesterous, superlative most pesterous)

(obsolete) Inclined to pester; vexatious; burdensome.
(Can we find and add a quotation of Bacon to this entry?)