Top-of-the-line, and what each of the four longest puzzle answers begins with?

Answer of Word Craze Top of the line and what each of the four longest puzzle answers begins with

This is a tricky question of Word Craze which last appeared on Level 6720. Meanings or answers can change from time to time with each game update if you noticed a change on the answer of this clue please do let us know by commenting below so we can fix it A.S.A.P.
The solution below is:

For other clue answers of Level 6720 Word Craze Level 6720 Answer open the the level link.