What does the cryptic crossword clue "Some reasoning and terribly fraught hint too (5,2,7)" mean?

The wordplay uses an anagram. anagram of FRAUGHT + HINT + TOO = TRAINOFTHOUGHT The answer is TRAINOFTHOUGHT.

Some reasoning and terribly fraught hint too (5,2,7)

Daily Mail Cryptic #17138 | 8 Down | 2023-07-11 flower