1. By design: intentionally.

2. By design.

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

• porposely,
• perposely,
• purpusly,
• purpesly,
• purpossly,
• porposly,
• supposely,
• purposese,
• puposly,
• purposees,
• purposess,
• purposedly,
• purposily,
• pourposly,
• purposley,
• purposefuly,
• purposelly,
• purpously,
• purplely,
• purposal

• purposeful,
• purposeless,
• purpose,
• purposive,
• purposefully,
• purpose-made.

The adjective form of the word "purposely" is "purposeful".