Lengthy Deliberations

What do the following words all have in common:

DELIGHTS, SPHINX, PHOTOGENIC, SELF-EVIDENT, FOUR, and INDIGENCE

The number of letters in each word can be seen in that word if read left to right. eg DELIGHTS = *E*IGHT*

Originally posted by michelleon
The number of letters in each word can be seen in that word if read left to right. eg DELIGHTS = *E*IGHT*

Originally posted by michelleon
The number of letters in each word can be seen in that word if read left to right. eg DELIGHTS = *E*IGHT*

Originally posted by Trev33
Are you sure about FOUR?

Originally posted by michelleon
There are four letters in "four" so what part of that do you not understand ?