Definitions of substantiate
to prove (=to give evidence to support an allegation or to prove the truth of something)
The unions will be forced to substantiate their claims in court in the coming weeks.
There are multiple definitions - click on the translation that matches your context.
substantiate means:
corroborar means:
verbo
full
verb
to prove (=to give evidence to support an allegation or to prove the truth of something)
The unions will be forced to substantiate their claims in court in the coming weeks.