Answer:

leap

AnswerCrossword Clue
LEAPBound upward
LEAPJete, for one
LEAPJump
LEAP"Quantum ..."
LEAPIt's a big one for mankind
LEAPLovers' venue
LEAPAct of faith?
LEAPStart of a bungee jump
LEAPSudden increase
LEAPTake a giant step
LEAP... in the dark (chancy act)
LEAPMake the ... (become great, as a promising athlete)
LEAPIllogical step
LEAPAbrupt transition
LEAPHurdle
LEAPJete
LEAPAcknowledge 2-29?
LEAPEntrechat, e.g.
LEAPSpring
LEAPGet off your feet?
LEAPBound
LEAPSteve Martin film, ".. of Faith"
LEAPThe Great ... Forward
LEAPSudden transition
LEAPVerb in the old "Superman" intro
LEAPUnwarranted conclusion, figuratively
LEAPLogician's error, maybe
LEAP"... one giant ... for mankind"
LEAPLeave one's feet
LEAPQuantum event?
LEAPGet off the ground
LEAP.. of faith
LEAP"...one giant .. for mankind"
LEAPIt may be quantum
LEAPGo for a rebound
LEAPLook before you ..
LEAPMomentary abandonment of logic
LEAPVault
LEAPQuantum ..
LEAPHurdle (over)