1. (verb) suppress

• choke back
• choke down

2. (verb) become or cause to become obstructed

• back up
• choke
• clog
• clog up
• congest
• foul

1. (verb) suppress

• conquer
• curb
• inhibit
• stamp down
• subdue
• suppress

2. (verb) become or cause to become obstructed

• block
• close up
• impede
• jam
• obstruct
• obturate
• occlude

1. (verb) become or cause to become obstructed

• block
• choke up
• lug
• stuff
• crap up
• gum up
• silt
• silt up

1. (verb) become or cause to become obstructed

• backup
• clog
• congestion
• over-crowding
• congestive

1. (verb) become or cause to become obstructed

• unclog