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Webster 1913 Edition

Improsperous

Im-pros′per-ous

,
Adj.
[Pref.
im-
not +
prosperous
: cf. F.
improspère
, L.
improsper
.]
Not prosperous.
[Obs.]
Dryden.
–
Im-pros′per-ous-ly
,
adv.
[Obs.]
–
Im-pros′per-ous-ness
,
Noun.
[Obs.]

Webster 1828 Edition

Improsperous

IMPROS'PEROUS

,
Adj.
[in and prosperous.] Not prosperous; not successful; unfortunate; not yielding profit; not advancing interest; as an improsperous undertaking or voyage.
[Unprosperous is the word most generally used in the sense.]

Definition 2024

improsperous

improsperous

English

Adjective

improsperous ‎(comparative more improsperous, superlative most improsperous)

  1. (obsolete) Not prosperous.
    (Can we find and add a quotation of Dryden to this entry?)

Derived terms

  • improsperously
  • improsperousness

Etymology

im- +‎ prosperous

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