Sure usually stresses the subjective or intuitive feeling of assurance Certain may apply to a basing of a conclusion or conviction on definite grounds or indubitable evidence. Full of hope and confidence, or giving cause for hope and confidence Characterized by or expressing certainty or affirmation Composed of or possessing actual or specific qualities Tending to emphasize what is good or laudable
He takes a very positive attitude when correcting pupils' mistakes. Showing or expressing approval or agreement A positive reaction to the speech Consisting in or characterized by the presence or possession of distinguishing or marked qualities or features (opposed to negative) Light is positive, darkness negative Noting the presence of such qualities, as a term.
There are 39 meanings listed in oed's entry for the word positive, seven of which are labelled obsolete See ‘meaning & use’ for definitions, usage, and quotation evidence. In the simplest sense, positive means good — or the opposite of negative If you have a positive attitude about homework, for example, you're more likely to get positive feedback on your report card.
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