tumble

[1]	fall (down) , pitch , turn end over end/head over heels , roll , drop
[2]	drop , toss , dump , jumble
[3]	tumble to , topple , understand , apprehend , perceive , comprehend , see the light , (Colloq) get the signal/message , catch on , (Brit) twig to , (Slang) get wise , wise up , dig
[4]	topple , tip
[5]	whirl , whirl around
[6]	crumble , crumple , break down , collapse
[7]	catch on , get wise , get onto , latch on , cotton on , twig , get it

[1]	spill , fall
[2]	fall , slip , stumble , (Colloq) header , spill