unsignaled
Given no indication
Unsignaled means done without a signal or warning.
A driver makes an unsignaled lane change.
An unsignaled turn catches other motorists off guard.
The word appears most often in traffic contexts but extends to any action taken without advance notice: an unsignaled shift in policy.
Occurring without prior notice
- abruptSharp and unexpected
- surpriseUnexpected event causing astonishment
- unforeseenNot predicted or expected
- unanticipatedNot predicted beforehand
unpredictable · startling · shocking · unforewarned · blindsiding · catching off guard · without warning · out of nowhere
Having no visible identification
- uncontrolledLacking any regulation
- unsignedBearing no signature
- unlitNot burning or glowing
- unprotectedWithout safeguard or shield
hazardous · dangerous · blind · risky · treacherous · precarious · high-risk · accident-prone
Bearing no signature
- unmarkedHaving no visible identification
- unindicatedNot signaled or marked
- unpostedNot yet sent
- unlabeledWithout identifying markers
untagged · unnumbered · undesignated · unidentified · anonymous · blank · plain · bare
Not openly expressed
- unspokenNot verbally expressed
- tacitUnderstood without words
- impliedSuggested without stating
- inferredConcluded from indirect evidence
understood · assumed · unexpressed · unvoiced · unarticulated · unmentioned · silent · wordless
Without prior notice
- unheraldedNot publicly announced beforehand
- unpublicizedNot brought to notice
- unadvertisedNot publicly announced
- unreportedNot officially documented
unbroadcast · undeclared · unnotified · uncommunicated · unwarned
sudden
Occurring without prior notice
- abruptSharp and unexpected
- surpriseUnexpected event causing astonishment
- unforeseenNot predicted or expected
unanticipated · unpredictable · startling · shocking · unforewarned · blindsiding · catching off guard · without warning · out of nowhere
unmarked
Having no visible identification
- uncontrolledLacking any regulation
- unsignedBearing no signature
- unlitNot burning or glowing
unprotected · hazardous · dangerous · blind · risky · treacherous · precarious · high-risk · accident-prone · unsafe
unsigned
Bearing no signature
- unmarkedHaving no visible identification
- unindicatedNot signaled or marked
- unpostedNot yet sent
unlabeled · untagged · unnumbered · undesignated · unidentified · anonymous · blank · plain · bare · featureless
unstated
Not openly expressed
inferred · understood · assumed · unexpressed · unvoiced · unarticulated · unmentioned · silent · wordless · unverbalized
unannounced
Without prior notice
- unheraldedNot publicly announced beforehand
- unpublicizedNot brought to notice
- unadvertisedNot publicly announced
unreported · unbroadcast · undeclared · unnotified · uncommunicated · unwarned