You can make CLERIC
Jolly is another five letter word meaning merry or happy is another.
orb
Acronym
Add another letter. men, met
It is called a "letter manipulation" or a "word transformation."
Anagram
The silent vowel in the word "circle" is the letter "e."
If you rearrange the letter of EIGHTH, you can make the word HEIGHT
aver
clug
forced
Change the A to a T to make "SOFT". Change the F to a M to make "SOMA"