(reflexive) Your own self (singular). / You (singular); used emphatically, especially to indicate exclusiveness of the referent's participation in the predicate, i.e., that no one else is involved.

Honorific alternative letter-case form of yourself, sometimes used when referring to God or another important figure who is understood from context.

Obsolete form of yourselves.

Of or pertaining to do it yourself.

A practitioner of do it yourself.

The practice of doing home improvements and maintenance oneself, rather than employing a professional.

plural of do-it-yourselfer

Do what you want; behave as you wish.

(colloquial) Consider the consequences of your actions before you end up in trouble.

(dated) go away (and stop bothering me)