ELF
heavy
There are several letters (such as: f, i, n, s) that can be added to the word, letter, to make a new word. Example: fettler, retitle, nettler, trestle.
sweed
Ice can be added to all three: icehouse, icecap, iceman.
make.
con
The word free can be added to create the word freeloader. It means a person who takes advantage of others' generosity for free food, entertainment, a place to live or money without paying for them.
suffix..
suffix..
t, pint s, pins
Prefixes are added to the beginning of a word. This is to make a new word.
The anagram for the word 'signs' is sings.Add the letter 'e' to make singes.