Formal

Ceremonious

Synonyms: Ceremonial, ritualistic, conventional, orthodox, fixed, stately, solemn, elaborate, dressy, ceremonious, ritual, traditional, prescribed, set, courtly, dignified, and ornate.

Reserved

Synonyms: Aloof, remote, unapproachable, keeping people at arm's length, prim, staid, correct, decorous, precise, punctilious, inflexible, unresponsive, unsympathetic, forbidding, withdrawn, reticent, uncommunicative, unforthcoming, antisocial, reserved, detached, stand-offish, stiff, stuffy, ceremonious, proper, conventional, exact, unbending, strait-laced, unfriendly, haughty, austere, restrained, taciturn, undemonstrative, and unsocial.

Learned

Synonyms: Literary, learned, erudite, highbrow, cultivated, scholarly, intellectual, bookish, and academic.

Legal

Synonyms: Official, authorized, validated, endorsed, sanctioned, recognized, accepted, legitimate, valid, proper, pro forma, legal, approved, certified, documented, licensed, authoritative, verified, lawful, bona fide, and prescribed.

Regular

Synonyms: Symmetrical, orderly, methodical, in straight lines, conventional, rigid, institutional, regular, arranged, systematic, regimented, mainstream, and school.

Example Sentences

He wore a formal suit today.

The event has a formal dress code.

She gave a formal presentation to clients.

They had a formal meeting yesterday.