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clumsy (work); awkward; poorly made; botched
ugly (of a person); unattractive; plain; homely
この棚は不細工な仕上がりだ。
This shelf has a clumsy finish.
彼はプレゼントを不細工に包んでしまった。
He ended up wrapping the present clumsily.
不細工な手作りの器だが、温かみがある。
It's a poorly made handmade bowl, but it has a warmth to it.