Synonyms for assumption
Most common
supposition hypothesis presupposition theory presumption conceit
Synonyms by meaning
Noun
1. Supposition
supposition, hypothesis, presupposition, theory, conjecture, surmise, postulate, supposal
2. Presumption
presumption, conceit, assurance, effrontery, insolence, presumptuousness
Other
Definitions
- n. 1
The act of assuming, or taking to or upon oneself; the act of taking up or adopting.
His assumption of secretarial duties was timely.
- n. 2
The act of taking for granted, or supposing a thing without proof; a supposition; an unwarrantable claim.
Their assumption of his guilt disqualified them from jury duty.
Related words
- Word family
- assume assumptive
Forms
- Plural
- assumptions → suppositions, hypotheses, presuppositions, theories…
Choose the right word
Assumption quietly takes for granted superiority and privilege which others would be slow to concede.
J. C. Fernald, English Synonyms and Antonyms (1914)
Example sentences
- theory Further study will prove that the theory is right.
- hypothesis Tom designed an experiment to test his hypothesis.
- supposition This supposition is essentially correct.
- presumption There is a strong presumption against its truth.
- conceit Her conceit about her beauty annoyed many people.
Popularity over time
| Word | 1850 → 2019 | Trend |
|---|---|---|
| assumption | steady | |
| theory | steady | |
| hypothesis | steady | |
| supposition | falling | |
| presupposition | rising | |
| presumption | steady |
Use in printed books, per decade from 1850 to 2019.
By length
- 6 letters
- theory2
- 7 letters
- premise2, conceit2, surmise2
- 8 letters
- supposal
- 9 letters
- assurance3, postulate3, insolence3
- 10 letters
- conviction3, hypothesis4, conjecture3, usurpation4, effrontery4
- 11 letters
- presumption3, supposition4
- 14 letters
- presupposition5
The small number after each word is its number of syllables (theory2 = 2 syllables).
In other languages
- Français
- assomption
- Català
- assumpció