only 1 use
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- No one in London knew positively of the nature of the armoured Martians, and there was still a fixed idea that these monsters must be sluggish: "crawling,"1.14 — Book 1 Chapter 14 — In London (20% in)
positively = with certainty
There are no more uses of "positive" in The War of the Worlds.
Typical Usage (best examples)