col·lo·qui·al·ism 
(kə-lōkwē-ə-lĭz′əm)
(kə-lōkwē-ə-lĭz′əm)n.
1. Colloquial style or quality.
2. A colloquial expression.
- stroller
- stroma
- stromal
- stromatic
- stromatolite
- stromatolitic
- Stromboli
- strong
- strong-arm
- strongbox
- strong breeze
- strong force
- strong gale
- stronghold
- strong interaction
- strongish
- strongly
- strongman
- strong-minded
- strong-mindedly
- strong-mindedness
- strong nuclear force
- strongpoint
- strong room
- strongroom