1. lacking a coherent plan or organization; disorderly or haphazard
Usage: formal or technical usage
2. (chemistry, of a polymer) having a random arrangement of stereoisomers along the molecular chain
Usage: chemistry, technical

Examples

• The atactic approach to the project resulted in missed deadlines and wasted resources.
• His atactic movements in the debate made it difficult to follow his argument.
• Atactic polypropylene has different properties than its isotactic counterpart.
• The team's atactic strategy left them vulnerable to their opponents.
• Atactic polymers tend to be less crystalline and more flexible than ordered polymers.