English

Adjective

improductive ‎(comparative more improductive, superlative most improductive)

1. (rare, nonstandard) unproductive
   • 1816, The Monthly Magazine

     But, as the principal of the loan, or, if you will, the capital lent, is generally consumed in consequence of this transfer, public loans produce an improductive consumption, a destruction of capital.

Usage notes

• Generally an error by non-native speakers.

French

Adjective

improductive

1. feminine singular of improductif