all of a sudden

Definition of All Of A Sudden in English :

1. all at once, all of a sudden

without warning

Example Sentences:
'all at once, he started shouting'

2. all of a sudden, of a sudden, suddenly

happening unexpectedly

Example Sentences:
'suddenly she felt a sharp pain in her side'

WordNet Lexical Database for English. Princeton University. 2010.

All Of A Sudden

without warning; unexpectedly

suddenly; unexpectedly

adj.

1. Happening without warning; unforeseen: a sudden storm.

2. Happening or done without delay; hasty or immediate: a sudden decision.

3. Characterized by sharp change in elevation; precipitous: a sudden drop in the ocean floor.