Twice over; twofold; doubly. / Two together; two at a time. (especially in see double)

Twice the number, amount, size, etc. / A person who resembles and stands in for another person, often for safety purposes / A drink with two portions of alcohol.

(transitive) To multiply by two. / (intransitive) To increase by 100%, to become twice as large in size. / To be the double of; to exceed by twofold; to contain or be worth twice as much as.

simple past tense and past participle of double

plural of double

(sports, plural only) a game between pairs of players / (campanology, plural only) bell changes rung on five bells

Third-person singular simple present indicative form of double

(military) In double time. / (soccer) scoring a brace

(idiomatic) Rapidly or immediately.

The state of being double or doubled. / Behaviour intended to deceive people.