Words formed from any letters in nicest, plus optional blank

The value of the blank, or of an existing letter already on the game board, is shown at the start of each line.

7 letters

6 letters

b - bisect  

j - inject  

k - sicken  

m - minces  

5 letters

4 letters

3 letters

j - jet   jin  

v - vie   vet   vis  

z - zin   zit