What do the following words have in common?

Sense

Fur

Curd

Jest

Great

Sighed

Clued 

 

Answer:

 

Each word can be preceded by "IN" to form another word - with the spelling adjusted:

 

Sense - incense

Fur - infer

Curd - incurred

Jest - ingest

Great - ingrate

Sighed - inside

Clued - include 

 

Credit:

Will Shortz