defect in English:

There's a flaw in your reasoning.

I know I am handsome, but I have one major flaw: my ears are too big.

I can't find a single flaw in her theory.

My technique is without flaw.

The flaws are the faults in your character or appearance.

I returned the material because it had a flaw in it.

We all have our flaws. In his case it's the fact that he doesn't know when to stop talking.

The computer game was flawed by poor programming.

We have a flaw here, which needs to be removed

The mark of a great hero his flaw.

This plan has a lot of flaws we need to work out

This ​report is ​full of flaws.

major flaw

I do love him, but he has a few flaws. The plan was good enough, but had two major flaws.

"plates with flaws in them were sold at the outlet store"

He entered the university after failing the examination twice.

My memory is failing.

In 1880, the Irish boycotted a landowner, Captain C.C. Boycott, for failing to lower rents.

They blamed him for failing to improve the economy.

His failing the test is no laughing matter.

Tom is in danger of failing this class.

I have many failings, but being a liar is not one of them.

ETA says it acknowledges its responsibility in failing to solve the Basque "political conflict."

He wishes to resign on the grounds that his health is failing.

Failing the examination means waiting for another year.

The teacher gave him a failing grade for basing his report on discredited research.

The car failing to start, we went by bus.

A woman is capable of failing to notice the hundred things that you've done her, and to address only the one that you haven't.

If you're missing the forest for the trees then you're failing to see the big picture.