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"support" is also used as a crossword clue. If that's what you saw, the answer is often backing (7 letters).
Definitions
Help, backing, or something that holds another thing up.
Word origin
From Middle English supporten, from Old French supporter, from Latin supportō.
Used in a sentence
“Don’t move that beam! It supports the whole platform.”
“He staggered away from the accident site, supported by one friend on each side.”
“There is a soft-mat seat (which originally had a palm fiber underwebbing) supported by three curved transverse braces.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Help or backing”7 letters
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