|1.||occurring or performed quickly and without warning|
|2.||marked by haste; abrupt|
|3.||rare rash; precipitate|
|4.||archaic an abrupt occurrence or the occasion of such an occurrence (in the phrase on a sudden)|
|5.||all of a sudden without warning; unexpectedly|
|6.||poetic chiefly without warning; suddenly|
|[C13: via French from Late Latin subitāneus, from Latin subitus unexpected, from subīre to happen unexpectedly, from sub- secretly + īre to go]|
see all of a sudden.