unannounced
Arriving without notice
Unannounced means without prior notice or warning.
An unannounced visit catches people off guard.
A celebrity might make an unannounced appearance.
To drop by unannounced is to arrive without calling ahead.
The word implies surprise, whether welcome or not: Health inspectors showed up unannounced.
Sharp and unexpected
- impromptuWithout advance preparation
- instantaneousHappening without any delay
- spontaneousArising without external cause
- immediateHappening without delay
swift · precipitate · unheralded · unprompted · unscheduled · snap · flash · spur-of-the-moment
Not predicted or expected
- unanticipatedNot predicted beforehand
- unpredictedNot foretold or anticipated
- unplannedNot arranged beforehand
- unlooked-forNot anticipated or foreseen
random · accidental · fortuitous · serendipitous · unintended · unpremeditated · unwitting · chance
Concealed information
- clandestineConcealed from authorities
- secretiveInclined to conceal
- undercoverSecretly engaged in espionage
- hiddenKept out of sight
undisclosed · confidential · furtive · surreptitious · undetected · stealthy · incognito · sneaky
Break in continuity
- intrusionUnauthorized entry into space
- disturbanceDisruption of order
- interferenceUnwelcome involvement in affairs
- disruptionForceful interruption of process
commotion · unsettling · inconvenient · unwelcome · untimely · inopportune · ill-timed · gate-crashing
abrupt
Sharp and unexpected
- impromptuWithout advance preparation
- instantaneousHappening without any delay
- spontaneousArising without external cause
immediate · swift · precipitate · unheralded · unprompted · unscheduled · snap · flash · spur-of-the-moment · blindsiding
unforeseen
Not predicted or expected
- unanticipatedNot predicted beforehand
- unpredictedNot foretold or anticipated
- unplannedNot arranged beforehand
unlooked-for · random · accidental · fortuitous · serendipitous · unintended · unpremeditated · unwitting · chance · surprising
secret
Concealed information
- clandestineConcealed from authorities
- secretiveInclined to conceal
- undercoverSecretly engaged in espionage
hidden · undisclosed · confidential · furtive · surreptitious · undetected · stealthy · incognito · sneaky · quiet
interruption
Break in continuity
- intrusionUnauthorized entry into space
- disturbanceDisruption of order
- interferenceUnwelcome involvement in affairs
disruption · commotion · unsettling · inconvenient · unwelcome · untimely · inopportune · ill-timed · gate-crashing · uninvited
visit
Trip to see another
- guestWelcomed visitor
- inspectionFormal assessment of condition
- appearanceOutward visible form
arrival · party · audit · checkup · drop-in · raid · test · quiz · caller · pop-in
- opennessopen, openness, transparent, transparency, accessible
- sudden thingssuddenly, abruptly, unexpectedly, instantly, spontaneous
- Jehovah's WitnessesJehovah's Witnesses, Jehovah, Kingdom Hall, Watchtower, disfellowshipping
unannouncedannounced
Publicly stated or declared
proclaimed · declared · publicized · broadcast · advertised
unannouncedexpected
Regarded as likely
anticipated · awaited · predicted · foreseen · long-awaited
unannouncedscheduled
Arranged for specific time
arranged · prearranged · pre-arranged · planned · appointed
announce, announced, announcement, denounce, announcer, renounce, announcing, announces, pronouncement