imperseverant
adjEtymology From im- + perseverant.
1
Obsolete Not persevering; fickle; thoughtless.
- yet this imperseuerant Thing loues him in my despight.1611 April (first recorded performance), William Shakespeare, “The Tragedie of Cymbeline”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, (please specify the act number in uppercase Roman numerals, and the scene number in lowercase Roman numerals):