I dare say Definition

dare
verb dared, daring

intr
1. (also as auxiliary verb ― see note below) to be brave enough to do something frightening, difficult or dangerous

Example: He wouldn't dare to leave
Example: Dare I tell him?
Thesaurus: take a chance, chance, risk, venture, gamble, try, attempt, endeavour, hazard, have the nerve (slang).
2. To challenge someone to do something frightening, difficult, dangerous, etc.
3. To be brave enough to risk facing someone or something.

Example: dare his father's anger
Thesaurus: defy, confront, oppose, challenge, brave.

noun

1. A challenge to do something dangerous, etc.

Idiom: How dare you!

An expression of anger or indignation at something someone has said or done.

Idiom: I dare say (I daresay)

Probably; I suppose.
Example: I dare say you're right

Etymology: Anglo-Saxon durran.

Info:

○ When dare means ‘to be brave enough to do something', it may be used either as an ordinary intransitive verb or as an auxiliary verb.

○ When dare is used as an intransitive verb, the form of the verb accompanying ‘he/she/it' ends in ‘-s', and questions and negative statements are formed with the auxiliary verb ‘do' &wbox; &wbox; &wbox; &wbox; As an intransitive verb, dare may be followed by ‘to', as in the examples above, or, equally correctly, by a verb without ‘to'&wbox; &wbox; &wbox;

○ When dare is used as an auxiliary verb, the verb accompanying ‘he/she/it' has no ‘-s' ending, questions and negative statements are formed without ‘do', and there is no ‘to' before the following verb&wbox; &wbox; &wbox;