(modal) Truly; in fact; actually. / (degree, after the adjective modified) In fact.

Indicates emphatic agreement. / With interrogative intonation (low-high) indicates serious doubt.

If a friend helps you when you are in need, they are a true friend. / If one of your friends is in need of help, help them because they are your friend.

Obsolete spelling of indeed

(humorous) indeed

Alternative spelling of indeedy

(humorous) Indeed.