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in question▼(in doubt, under dispute)adjective[UK: ɪn ˈkwes.tʃən] [US: ɪn ˈkwes.tʃən]
unsure▼(uncertain)adjective[UK: ʌn.ˈʃʊə(r)] [US: ʌn.ˈʃʊr]
Heisenberg uncertainty principle▼(physical principle)proper noun
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