Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb topple
2 senses of topple
Sense 1
tumble, topple -- (fall down, as if collapsing; "The tower of the World Trade Center tumbled after the plane hit it")
=> descend, fall, go down, come down -- (move downward and lower, but not necessarily all the way; "The temperature is going down"; "The barometer is falling"; "The curtain fell on the diva"; "Her hand went up and then fell again")
Sense 2
topple, tumble, tip -- (cause to topple or tumble by pushing)
=> push, force -- (move with force, "He pushed the table into a corner")