unscheduled
adjective/ʌnˈskɛdʒuld/
Frequency rank: #16,377 most common English word
Meaning
not planned or arranged in advance; not on the official schedule.

Example sentence
The pilot announced unscheduled maintenance work would delay the flight by two hours.
Synonyms & related words
Practice this word in the quiz
More words in ranks 16,301–16,400
- typhusAn infectious disease caused by bacteria, transmitted by lice or fleas, and characterized by fever, rash, and headache.
- unaffiliatednot officially connected to or associated with any organization or group.
- unconscionableShockingly unfair or unreasonable; going far beyond what is acceptable.
- unflatteringMaking someone or something look worse or less appealing than usual.
- unrecognizableso changed or damaged that it cannot be identified or recognized.
- unstructuredwithout a fixed plan, organization, or set of rules.
- vagranta person who wanders from place to place without a fixed home or job.
- voicelesshaving no voice or power to express opinions; not spoken aloud.
- walkoutA sudden strike or departure as a form of protest.
- wearableselectronic devices worn on the body that collect health or activity data.