clumsy; poorly made; botched
Describes something made or done without skill, resulting in an awkward or unattractive outcome. Often used for objects, crafts, or actions.
This shelf is clumsily made, but it's sturdy.
字がブサイクで恥ずかしい。
My handwriting is so awkward I'm embarrassed.
ugly; unattractive; plain-looking
Refers to a person's appearance being unattractive or homely. Casual and somewhat blunt; can be self-deprecating or teasing.
あの俳優、ブサイクだけど演技はうまいよね。
That actor is plain-looking, but his acting is great.
自分でブサイクだって言うけど、そんなことないよ。
You say you're ugly, but that's not true.
The handmade chair ended up looking clumsily made.
"My face is so plain that I hate having my picture taken," he said with a laugh.
不細工 describes a plain or unattractive face, the opposite of the good looks implied by 美形.