| Definition/Meaning | Word/Phrase |
| chance and unexpected |
accidental
,
inadvertent
,
incidental
,
unplanned
,
unpremeditated
|
| series of unexpected and unpleasant occurrences |
blizzard
,
rash
|
| unexpected gift |
bonus
|
| unforeseen or unexpected or surprising difficulty |
booby trap
,
pitfall
|
| unexpected piece of good luck |
break
,
good luck
,
happy chance
|
| secondary and sometimes unexpected consequence |
by-product
,
byproduct
|
| sudden and unexpected death of an apparently healthy infant during sleep |
cot death
,
crib death
,
infant death
,
SIDS
,
sudden infant death syndrome
|
| casual or unexpected convergence |
encounter
,
meeting
|
| unexpected omission |
failure
|
| female character is some fairy stories who has magical powers and can bring unexpected good fortune to the hero or heroine |
fairy godmother
|
| unexpected but vivid recurrence of a past experience (especially a recurrence of the effects of an hallucinogenic drug taken much earlier) |
flashback
|
| unexpected welcome thing or occurrence |
godsend
|
| different in unexpected way |
heterogeneous
,
incongruous
|
| inquiry into the cause of an unexpected death |
inquest
|
| unexpected movement |
jar
|
| extra or unexpected gift |
lagniappe
|
| improbable and unexpected victory |
overturn
,
upset
|
| sudden and unexpected change of fortune or reverse of circumstances (especially in a literary work) |
peripeteia
,
peripetia
,
peripety
|
| whatever happens to be available especially when offered to an unexpected guest or when brought by guests and shared by all |
potluck
|
| unexpected acceleration or hastening |
precipitation
|