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All answers having "Supported" as clue:

3 Character Answers:

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OKD

SED



4 Character Answers:

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HELD

KEPT



5 Character Answers:

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AIDED

BASED

BORNE

SIDED



6 Character Answers:

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BACKED

BRACED

HELPED

SHORED

STAKED

STAYED

UPHELD



7 Character Answers:

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PROPPED

STOODBY

TRESTLE

VOUCHED



8 Character Answers:

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ASSISTED

DEFENDED

ENDORSED

ESPOUSED

SECONDED



9 Character Answers:

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ADVOCATED

PULLEDFOR

SIDEDWITH

SPONSORED