[skej-ool, -ool, -oo-uhl; British shed-yool, shej-ool]


verb (used with object), sched·uled, sched·ul·ing.

to make a schedule of or enter in a schedule.
to plan for a certain date: to schedule publication for June.

Origin of schedule

1350–1400; < Late Latin schedula, equivalent to Latin sched(a) leaf of paper + -ula -ule; replacing Middle English cedule, sedule < Middle French < Late Latin, as above
Related formssched·u·lar, adjectivesched·ul·er, nounpre·sched·ule, verb (used with object), pre·sched·uled, pre·sched·ul·ing.sub·sched·ule, nounun·sched·uled, adjectivewell-sched·uled, adjective

Synonyms for schedule

4. table, register. See list1. 6. register, list, enroll, tabulate. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unscheduled

Contemporary Examples of unscheduled

Historical Examples of unscheduled

  • Now, he had half an hour extra for the unscheduled major hazard.

  • Besides, your crystal gymnastics, Starrett, were as unscheduled as her arrival.

    Diane of the Green Van

    Leona Dalrymple

  • Mr. Brady's invasion was not the first unscheduled event which had enlivened a party at the Birches.

    The Wishing Moon

    Louise Elizabeth Dutton

  • And since this territory was all unscheduled in the government of the Yukon, it was his for just as long as he could hold it.

  • Some, frowning portentously, thought the plane an unscheduled ocean flier who had lost his way in the fog.

British Dictionary definitions for unscheduled



not arranged or planned according to a programme, timetable, etc



a plan of procedure for a project, allotting the work to be done and the time for it
a list of itemsa schedule of fixed prices
a list of times, esp of arrivals and departures; timetable
a list of tasks to be performed, esp within a set period
law a list or inventory, usually supplementary to a contract, will, etc
on schedule at the expected or planned time

verb (tr)

to make a schedule of or place in a schedule
to plan to occur at a certain time
Derived Formsschedular, adjective

Word Origin for schedule

C14: earlier cedule, sedule via Old French from Late Latin schedula small piece of paper, from Latin scheda sheet of paper
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

Word Origin and History for unscheduled



late 14c., sedule, cedule "ticket, label, slip of paper with writing on it," from Old French cedule (Modern French cédule), from Late Latin schedula "strip of paper" (in Medieval Latin also "a note, schedule"), diminutive of Latin scheda, scida "one of the strips forming a papyrus sheet," from Greek skhida "splinter," from stem of skhizein "to cleave, split" (see shed (v.)). Also from the Latin word are Spanish cédula, German Zettel.

The notion is of slips of paper attached to a document as an appendix (a sense maintained in U.S. tax forms). The specific meaning "printed timetable" is first recorded 1863 in railway use. Modern spelling is a 15c. imitation of Latin, but pronunciation remained "sed-yul" for centuries afterward; the modern British pronunciation ("shed-yul") is from French influence, while the U.S. pronunciation ("sked-yul") is from the practice of Webster, based on the Greek original.



"make a schedule of, 1855; include in a schedule, 1862; from schedule (n.). Related: Scheduled; scheduling.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with unscheduled


see on schedule.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.