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Webster 1913 Edition

adv.

In a illiberal manner, ungenerously; uncharitably; parsimoniously.

adv.

Ungenerously; uncandidly; uncharitably; disingenuously.

Parsimoniously.

illiberally ‎(comparative more illiberally, superlative most illiberally)

In an illiberal manner.
- 1823, Sir Richard Phillips & Company, Public Characters of All Nations
  He took an active part, as chairman, in the meetings which, at the beginning of the contest with France, were assembled to petition for peace, and was illiberally expelled from the Surrey troop of light-horse, on account of his patriotism.