Common Words:
* beautify
* clarify
* dignify
* electrify
* fortify
* glorify
* intensify
* justify
* magnify
* modify
* purify
* ratify
* simplify
* specify
* terrify
* verify
Less Common Words:
* amplify
* codify
* deify
* falsify
* gratify
* identify
* liquefy
* personify
* quantify
* rectify
* sanctify
* solidify
* stupefy
* testify
* vivify
Words with a Specific Meaning:
* autophagy (process of a cell eating itself)
* biopsy (removal of a small amount of tissue for examination)
* caligraphy (art of fine writing)
* holography (production of three-dimensional images)
* photography (art or process of capturing images)
* typography (art or process of designing and arranging type)
This is just a small sample of words ending with "-fy". Remember that the suffix "-fy" often indicates the creation or transformation of something, making something more like what the root word signifies.