Pronunciation: /ʃʊr/

Definitions of sure

adjective certain or confident without doubt

Example Sentences

A1 I am sure that my friend will come to the party.

A2 She seems sure of her decision to study abroad.

B1 I'm pretty sure I left my keys on the kitchen counter.

B2 After double-checking the information, I am now sure of the answer.

C1 He is absolutely sure that he will succeed in his new business venture.

C2 Having researched the topic extensively, I am completely sure of my findings.

adverb in a confident or positive manner

Example Sentences

A1 I am sure I locked the door before leaving.

A2 She is sure she left her keys on the table.

B1 I'm sure we can find a solution to this problem.

B2 He was sure he had seen her before somewhere.

C1 I am sure that I will succeed in my new job.

C2 She was sure that the project would be completed on time.

Examples of sure in a Sentence

formal I am sure that the data provided is accurate.

informal Sure, I can give you a ride to the party.

slang Sure thing, I'll hook you up with some tickets.

figurative She sure knows how to pull at my heartstrings.

Grammatical Forms of sure

past tense

sured

plural

sures

comparative

surer

superlative

surest

present tense

sure

future tense

will sure

perfect tense

have sured

continuous tense

is sureing

singular

sure

positive degree

sure

infinitive

to sure

gerund

suring

participle

sured

Origin and Evolution of sure

First Known Use: 1250 year
Language of Origin: Old French
Story behind the word: The word 'sure' originated from the Old French word 'seur' which came from the Latin word 'securus' meaning secure or safe.
Evolution of the word: Over time, the word 'sure' evolved to not only mean certain or confident, but also to express agreement or confirmation in colloquial language.