Disease.
The anagram of the word seaside is disease.The next possible longest words have six letters and include daises and easies.
The anagram is "malady" (illness).
flea
The anagram is "meaning."
Slipper
Finger is part of the hand.
The Spanish anagram is especialmente, meaning especially.
An anagram of REG PONY meaning offspring is progeny.
An aptagram is an anagram whose meaning is relevant to that of the original text which was anagrammed.
The type of pancake is crepe.
The anagram for "brides meaning scattered rubbish ruins" is "disembruing brainless druids." An anagram is a word or phrase formed by rearranging the letters of a different word or phrase, using all the original letters exactly once. In this case, the original phrase has been rearranged to form a new phrase with a different meaning.
Top of the line means the best.