The most common and most likely answer to this crossword clue is the 8 letter word TITANESS
T
I
T
A
N
E
S
S
More clues leading to the result TITANESS
- Superhuman woman? She sings and flies with a cape
- Phoebe, say, crossing over street,inhales French cigarettes untipped?
- Small house almost rejected big girl
- A child of Earth misbehaving, raised head
- Big female bird with a head buried
- Rhea, for example, bird on a headland
- Powerful female, nastiest when upset
Buddy explains!

The straight part
We know that "Superhuman woman" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case superhuman woman = titaness.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.