1. (adjective) without payment

• volunteer

2. (adjective) engaged in as a pastime

• amateur
• recreational

1. (adjective) not paid

• buckshee
• complimentary
• costless
• free
• gratis
• gratuitous
• non-paying
• outstanding
• owing
• undischarged
• pro bono
• rent-free
• uncompensated
• unsalaried

2. (adjective) without payment

• voluntary

3. (adjective) engaged in as a pastime

• nonprofessional

1. (adjective) not paid

• due

1. (adjective) engaged in as a pastime

• amateur
• amateur

1. (adjective) not paid

• paid