[ uhn-prin-suh-puhld ]
/ ʌnˈprɪn sə pəld /


lacking or not based on moral scruples or principles: an unprincipled person; unprincipled behavior.
not instructed in the principles of something (usually followed by in).

Origin of unprincipled

First recorded in 1625–35; un-1 + principled

OTHER WORDS FROM unprincipled

un·prin·ci·pled·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for unprincipled

British Dictionary definitions for unprincipled

/ (ʌnˈprɪnsɪpəld) /


lacking moral principles; unscrupulous
(foll by in) archaic not versed in the principles of (a subject)

Derived forms of unprincipled

unprincipledness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012