Arg0:causer, agent
Arg1:thing losing value
Arg2:instrument
| just transitive (-) | |
|---|---|
|  | |
| Arg0: | it | 
| REL: | cheapens | 
| Arg1: | the vehicle's image | 
| with instrument (-) | |
|---|---|
|  | |
| Arg0: | John | 
| REL: | cheapens | 
| Arg1: | his own image | 
| Arg2-by: | associating with characters like Mary | 
Oddly, cheapen doesn't seem to mean "reduce in price", which would also be a class 45.4 verb but with different PAS (requiring an EXT, start and end points).