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Look up thumbsucker in Wiktionary, the free dictionary.
Thumbsucker or thumb sucking may refer to:
- Thumb sucking
- Thumbsucker (novel), a 1999 novel by Walter Kirn
- Thumbsucker (film), a 2005 film directed by Mike Mills based on the novel
- Thumbsucker (soundtrack), the soundtrack to the 2005 film
- (journalistic slang) a lengthy think piece or editorial on a complex topic
- A mode of data theft