Pierre Teilhard de Chardin

I give the name of cosmic sense to the more or less confused affinity that binds us psychologically to the All which envelops us. The existence of this feeling is indubitable, and apparently as old as the beginning of thought... The cosmic sense must have been born as soon as man found himself facing the forest, the sea and the stars.

French Philosopher

Theodore Dalrymple

I do not think it possible for anyone to get by in life without prejudice. However, the attempt to do so leads many people to suppose that, in order to decide any moral question, they have to find an indubitable first principle from which they can deduce an answer.

English Writer

Use 'indubitable' when you're 100% certain about something and want to emphasize its truthfulness.

Absolute Certainty

'Indubitable' is typically used in formal or academic texts rather than in casual conversations.

Formal Contexts

Apply 'indubitable' when there are no alternative possibilities or doubts at all.