It is a good idea to comment the (rare) cases in which a fall-through is intentional so that an uncommented fall-through can be assumed to be an error.
Source: wiktionary
Fall-through
Synonyms for "fall-through"
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2 entriesSample sentences
3 total sentences available.
If you place default elsewhere, then a break will be required to prevent fall-through.
Source: wiktionary
Specifically, it prohibits fall-through conditions in almost all cases.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.