jumping-off point
Noun
Meaning
a beginning from which an enterprise is launched
Source: WordNetSynonyms
springboard
point of departure
bluff
crag
scarp
beginning
cliff
crossroad
edge
crisis
scar
foothold
contingency
bridgehead
ledge
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Antonyms
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Examples
he uses other people's ideas as a springboard for his own
reality provides the jumping-off point for his illusions
the point of departure of international comparison cannot be an institution but must be the function it carries out