bog
verb
bogged; bogging
: to cause to sink into or as if into a bog (see bog entry 1) : impede, mire
—usually used with down
a car that had gotten bogged down in the mud
easy to get bogged down in the details
: to become impeded or stuck
—usually used with down
Extra demand can cause the system to bog down.
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Merriam-Webster unabridged



