informal

Not formal or ceremonious; casual.

Not being in accord with prescribed regulations or forms; unofficial.

Suited for everyday wear or use.

Characterized by nontechnical vocabulary, simple sentence structure, and relatively few explicit transitions, as typified by spoken language.

Not formal; not in the regular or usual form or manner; not according to rule or custom; unceremonious; irregular: as, an informal writing; informal proceedings; an informal visit.

Distracted or deranged in mind.

Not in the regular, usual, or established form; not according to official, conventional, prescribed, or customary forms or rules; irregular; hence, without ceremony.

Deranged in mind; out of one’s senses.

Not formal or ceremonious; casual.

Not in accord with the usual regulations; unofficial.