1. Pertaining to or according to the rules of architecture.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• architectual,
• arcetectural,
• architectureal,
• archetectual,
• architictural,
• archetechural,
• archetecural,
• arhitectural,
• architecutral,
• arechitectural,
• archietectural,
• architechtural,
• architecturual,
• architctural,
• architectal,
• architectular,
• architecturial,
• achitechtural,
• architectuaral,
• architetural

• architecturally,
• architectonics,
• architectonic,
• architecture,
• architrave.

The adjective form of the word "architectural" is "architectural".

The plural form of the word "architectural" is "architecturals".

The singular form of the word "architectural" is "architecture"