leap
leaped or leapt (
verb
1.
2.
noun
2. An abrupt or precipitous passage, shift, or transition: a leap from rags to riches.
by leaps and bounds
Very quickly: growing by leaps and bounds.
leap in the dark
An act whose consequences cannot be predicted.
leap of faith
The act or an instance of believing or trusting in something intangible or incapable of being proved.
[Middle English lepen, from Old English hlēapan.]