Apte Sanskrit-English Dictionary
a. 1 Not used or em- ployed, not applied.
2 Wrongly used, as a word.
3 (In Rhet.) Rare, unusual (as a word when used in a particular sense or gender though that sense or gender be sanctioned by lexicographers); aprayuktaṃ tathāmnātama- pi kavibhirnādṛtaṃ; tathā manye daivatosya piśāco rākṣaso'thavā. where the mas. gender of daivata, though sanctioned (by Amara), is not used by poets and is, therefore, aprayukta.