* Short "o" words:
* on
* off
* dog
* hot
* lot
* rock
* stop
* box
* frog
* shop
* clock
* soft
* cost
* boss
* lost
* top
* drop
* mop
* spot
* got
* not
* pot
* slot
* cloth
* flock
* block
* knock
* crop
* smock
* frock
* mock
* sock
* lock
* log
* jog
* fog
* hog
* dog
This is not an exhaustive list, as there are many words with the short "o" sound!