1. (noun) an imperfection in an object or machine

• defect
• fault

2. (verb) add a flaw or blemish to; make imperfect or defective

• blemish

1. (noun) an imperfection in an object or machine

• blister
• bug
• glitch
• hole

2. (noun) defect or weakness in a person's character

• hamartia
• tragic flaw

1. (noun) an imperfection in an object or machine

• imperfection
• imperfectness

2. (noun) defect or weakness in a person's character

• failing
• weakness

3. (noun) an imperfection in a plan or theory or legal document that causes it to fail or that reduces its effectiveness

• imperfection
• imperfectness

4. (verb) add a flaw or blemish to; make imperfect or defective

• damage

1. (noun) an imperfection in an object or machine

• blemish
• defective
• faulty

2. (noun) defect or weakness in a person's character

• blemish

3. (verb) add a flaw or blemish to; make imperfect or defective

• blemish
• defect
• mar
• defect
• fault