Definition of assumption
- the assumption of a new position
- the assumption of power
- a mistaken assumption
I made the assumption that he was coming, so I was surprised when he didn't show up.
He will come home tomorrow. At least, that's my assumption.
Many scientific assumptions about Mars were wrong.
I'm telling you our arrival time on the assumption that you will check to see whether or not our flight is on time before you come to the airport.
Her plan is based on the underlying assumption that the economy will improve in the near future.
her assumption of the presidency
the buyer's assumption of debt
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'assumption.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
arrogance, bumptiousness, consequence, haughtiness, hauteur, high horse, huffiness, imperiousness, loftiness, lordliness, masterfulness, pomposity, pompousness, presumptuousness, pretense (or pretence), pretension, pretentiousness, self-importance, superciliousness, superiority;
cockiness, complacence, conceit, egoism, egotism, pride, pridefulness, self-assumption, self-centeredness, self-complacency, self-conceit, self-content, self-contentment, self-opinion, self-partiality, self-satisfaction, smugness, swelled head, vanity;
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