The most common and most likely answer to this crossword clue is the 9 letter word DEPENDENT
I've seen this crossword clue in The Guardian
D
E
P
E
N
D
E
N
T
More clues leading to the result DEPENDENT
- Subject twin studies with time including PE
- Writer indeed struggling with books, financially needing others
- Subject of French writer approaching depression
- Exercise in study girl with dictionary finds weak
- Needing support of French writer, having depression
- Writer protected by editor when in depression, as a hanger-on
- . Eliminating welfare finally to intensify depression for helpless
- Subject of French writer: depression
- Ed sent up style of writing with negative effect for subordinate
- Child makes double den with gym inside and vault at the back
Buddy explains!

The straight part
We know that "financially needing others" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case financially needing others = dependent.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.
What does DEPENDENT mean?
DEPENDENT noun- One who relies on another for support
- (grammar) An element in phrase or clause structure that is not the head. Includes complements, modifiers and determiners.
- (grammar) The aorist subjunctive or subjunctive perfective: a form of a verb not used independently but preceded by a particle to form the negative or a tense form. Found in Greek and in the Gaelic languages.
- Relying upon; depending upon.
- Having a probability that is affected by the outcome of a separate event.
- (of Scottish Gaelic, Manx and Irish verb forms) Used in questions, negative sentences and after certain particles and prepositions.
- Affecting the lower part of the body, such as the legs while standing up, or the back while supine.
- Hanging down.