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has observed
  • present perfect of observe (3rd person singular).

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Bustamante has observed the same issue -- there have only been between two and four hantavirus cases a year at the hospital where he works in Bariloche.

From Barron's • May 15, 2026

There, Lowell convinced himself that alien-built canals crisscrossed the Martian surface, though anyone who has observed Mars with a similar telescope knows it’s hard to see much detail at all.

From The Wall Street Journal • Apr. 23, 2026

Moreover, London-headquartered Eurizon SLJ has observed a boom in export profitability and a substantial buildup in household savings that may be released from bonds, currently yielding only 1.8%

From MarketWatch • Apr. 14, 2026

She has observed that many of her patients — overachieving, ambitious women — struggle to embrace pleasure.

From Los Angeles Times • Jan. 12, 2026

The problem, as Donald Trefil has observed, is that "there are two sets of data, from two different disciplines, that cannot be reconciled."

From "A Short History of Nearly Everything" by Bill Bryson