Misspelling of one-sidedly.

Partial or biased in favour of one faction or demographic group. / With one competitor dominant over the other. / Out of proportion or lopsided. / Having only one side, like a Möbius strip.

(idiomatic) A direct, somewhat impolite demand to ask someone to move out of the way.

(idiomatic) A place where things are stored or reserved, as in:

Used other than figuratively or idiomatically: see on, side. / Supporting or advocating for someone. / Helping to succeed; acting as an advantage.

(idiomatic) To laugh hysterically.

(idiomatic) To not be rushed; to have plenty of time to do something. / (idiomatic) To be in a situation which becomes more favorable as time progresses.

To be able to laugh at another person through having got the better of them.

To fulfill a commitment as part of keeping to an agreement.