The conflict widened into a fully-fledged war.
fully
/ˈfu̇(l)-lē/
adverb
in a full manner or degree : completely
at least
adjective
fully developed
meeting all the necessary requirements to be something
/ˈfu̇(l)-lē/
in a full manner or degree : completely
at least
fully developed
meeting all the necessary requirements to be something
The conflict widened into a fully-fledged war.