indubitable

Part of speech: adverb

Indubitably.

Part of speech: noun

INDUBITABLENESS.

Part of speech: adjective

Not open to doubt; unquestionable; certain.

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Usage examples "indubitable":

  1. The last of the three was only a few years younger than Hideyoshi, and had already shown indications of the clear and steady character of which he afterward gave such indubitable proof. - "Japan", David Murray.
  2. Such is the nature of the human mind, that we all begin in this sphere of equal knowledge, we begin under the dominion of the senses, and whatever comes within that wants no demonstration, wants no proof, wants no logic; it is the constant, it is the most indubitable, it is the most indisputable of all our knowledge. - "Modern Atheism under its forms of Pantheism, Materialism, Secularism, Development, and Natural Laws", James Buchanan.
  3. The scientific theory is as follows:- " For the study of the laws of life of human societies, there exists but one indubitable method,- the positive, experimental, critical method " Only sociology, founded on biology, founded on all the positive sciences, can give us the laws of humanity. - "On the Significance of Science and Art from What to Do?", Count Lyof N. Tolstoi.