bog down (
http://definr.com/bog down)
v 1: get stuck while doing something; "She bogged down many times
while she wrote her dissertation" [syn:
bog]
2: cause to get stuck as if in a mire; "The mud mired our cart"
[syn:
mire]
3: be unable to move further; "The car bogged down in the sand"
[syn:
get stuck,
mire]
4: cause to slow down or get stuck; "The vote would bog down
the house" [syn:
bog]