In a deictic manner; using or relating to words that point to or refer to things based on context rather than direct naming.
From deictic + -ally (adverbial suffix converting adjectives to adverbs). This creates the adverbial form describing how something functions in a deictic way.
When linguists say 'he used the pronoun deictically,' they mean he relied on context to make meaning—this is why old texts are harder to understand, because we've lost the pointing gestures and immediate context.
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