As adverbs the difference between abruptly and spontaneously
is that abruptly is in an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously while spontaneously is in a spontaneous manner; naturally; voluntarily.
abruptly
English
Adverb
(
en adverb)
In an abrupt manner; without giving notice, or without the usual forms; suddenly; precipitously.
Derived terms
* abruptly pinnate
References