He musta guessed. There's no other explanation.
Source: wiktionary
Musta
Synonyms for "musta" (2 found)
Ranked by relevance and common usage.
Related word relations
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Sample sentences
2 total sentences available.
I ran out the kitchen and down the narrow hallway. I passed a staircase on my right that led to the apartment upstairs where T.C. and Miss Lady lived. I'd never been invited up there but I had a colorful picture in my little head about how grand it musta been.
Source: wiktionary
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.