Common words:
* assess
* misses
* glasses
* blesses
* presses
* crosses
Less common words:
* dissesses
* fussiness
* grassiness
* hissiness
* possesses
* trespasses
* addressess (rare, but sometimes used for plural of "address")
Technical terms:
* stressess (used in some contexts, especially in linguistics)
Proper nouns:
* Mississippi (river and state in the US)
Let me know if you'd like more examples!