pop | arrive unexpectedly, move in suddenly |
sudden | unexpected, unpredictable, unlooked for |
surprise | take prisoner, capture [especially: suddenly, unexpectedly] |
unawares | without warning, by surprise, unexpectedly |
unawares | unexpectedly |
unhoped | unexpected, unforeseen, unanticipated |
unlooked | unexpected, unanticipated, unforeseen |
unlooked-for | unexpected, unanticipated, unforeseen |
unthought-on | unexpected, unforeseen, fortuitous |