| Pandora's box |
a source of unexpected problems or ills. |
| pitfall |
an unexpected or hidden danger. [1/2 definitions] |
| qualm |
an abrupt and unexpected faint, nauseated, or sick feeling. [1/2 definitions] |
| queer |
strange, unusual, or unexpected; eccentric; odd. [1/6 definitions] |
| quirk |
a sudden, sharp, and unexpected turn or shift. [2/3 definitions] |
| recoil |
to cause damage by an unexpected return of negative effect. [1/5 definitions] |
| rude |
violent and unexpected. [1/5 definitions] |
| sally |
an unexpected or sudden burst of activity or emotion; outburst. [1/7 definitions] |
| SIDS |
acronym of "sudden infant death syndrome," the unexpected death of a seemingly healthy infant, usu. occurring within the first year of life, and usu. occurring in the infant's sleep; crib death. |
| snag |
a hidden or unexpected problem or impediment; obstacle. [1/7 definitions] |
| startling |
causing one to move suddenly or involuntarily because loud, sudden, or unexpected. [1/2 definitions] |
| sucker-punch |
to strike (someone) with a quick, unexpected blow. |
| sucker punch |
a quick, unexpected blow or punch. |
| sudden infant death syndrome |
the unexpected death of a seemingly healthy infant, usu. occurring within the first year of life, and usu. occurring in the infant's sleep; crib death. |
| supervene |
to take place later in the course of something as a change, interruption, or unexpected addition. [1/2 definitions] |
| surprise |
anything unexpected. [1/8 definitions] |
| surprising |
unexpected; unanticipated. [1/2 definitions] |
| take by surprise |
to come to (someone) as something completely unexpected. [1/2 definitions] |
| twist |
a sudden or unexpected change in an otherwise predictable or even pattern. [1/19 definitions] |
| unhoped-for |
not hoped for; unexpected. |
| unlooked-for |
not anticipated; unexpected. |