negligibly

From negligible +‎ -ly.

• IPA^(key): /ˈnɛɡlɪd͡ʒɪbli/, /ˈnɛɡləd͡ʒəbli/

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negligibly (not comparable)

1. To a degree that is negligible; so small or slight that it may be ignored.
   • 1920, Albert Einstein, Relativity: The Special and General Theory:

     Thus if the spherical surface beings are living on a planet of which the solar system occupies only a negligibly small part of the spherical universe, they have no means of determining whether they are living in a finite or in an infinite universe.

• insignificantly

• importantly
• significantly