extemporeformal

SMART Vocabulary: related words and phrases

Not expected or planned
abrupt end
abrupt halt
abruptly
abruptness
ad hoc
inadvertency
inadvertent
inadvertently
inconceivable
inconceivably
sine die
spirit
spontaneity
spontaneous
spontaneously
unsuspected
untimely
untoward
unwilled
unwitting

impromptu | American Dictionary

impromptu
adjective[ not gradable ]
us/ɪmˈprɑmp·tu/
done or said without earlier planning or preparation:
an impromptu speech

Examples of impromptu

impromptu
Waving a filthy fan, he swaggers his way into the middle of the arena, and delivers some impromptu verses.
Finally, in order to evaluate the foreign learners' command of gender in impromptu unassisted output, we obtained examples of their spontaneous written prose.
The second year extends students' shared socio-cultural knowledge through learning the standard jazz repertoire and performing together in impromptu and fluid bands.
Nor are they, it must be said, free from those defects which belong to such impromptu inspirations.
The more affluent, meanwhile, set aside rooms in their homes for use as impromptu chapels and heard services with greater frequency, albeit at greater risk.
There is an element of the impromptu about it, even of serendipity.
These entertainments may not be impromptu, but not all are contrived paddywackery.
In impromptu speaking, proximity agreement results from the halo effect of whatever has gone just before, and does not seem to provide a grammatical distraction.
Cards, refreshments, music, or even an impromptu hop might be included.
Some of the presentations were written out and read; others were delivered extemporaneously, and a few were identified as unprepared or impromptu.
The measure of the skill with language is revealed in the impromptu give-and-take of the unrehearsed press conference.
In these looser experimental spaces (where talking was encouraged), bands were formed, concerts were planned, and sometimes, impromptu performances were enacted.
Some dancers made a junket of going around to viejotecas on weekends, performing impromptu numbers for club-goers in return for a few pesos or a round of drinks.
Generously designed to accommodate impromptu gatherings, the stair is at once a dynamically composed and assembled architectural element as well as a place of repose and reorientation.
Increase in pupil numbers in the 1970s had prompted an impromptu expansion into temporary huts, and eventually a competition was held to extend the school properly in 1987.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.