[ad lib-i-tuh m; Latin ahd lib-i-too m]
at one's pleasure.
Music. not obligatory or indispensable. Abbreviation: ad lib.
Origin of ad libitum
Borrowed into English from Latin around 1695–1705
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for ad libitumad-lib, extemporaneous, freely, impromptu, improvised, impulsive, made-up, offhand, spontaneously, unrehearsed, off-the-cuff
music (to be performed) at the performer's discretionOften shortened to: ad lib
Word Origin for ad libitum
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