a remnant or leftover; an incomplete set or fragment; the part remaining.
裁縫をしていると布の半端がたくさん出る。
When sewing, a lot of fabric scraps are left over.
机の下に半端が落ちていた。
There were remnants lying under the desk.
商品のセットが半端で揃っていない。
The product set is incomplete; pieces are missing.
a fraction; an odd amount — a leftover amount that doesn't divide evenly (e.g., spare change).
会計の端数は半端で切り捨てられた。
The odd amount in the bill was dropped.
half-hearted; perfunctory — describing something done incompletely or without full effort.
半端な気持ちで仕事をするなと言われた。
"Don't do the job half-heartedly," I was told.
彼の謝罪は半端で、許せるものではなかった。
His apology was half-hearted and not forgivable.
irresponsible; foolish — describing behavior or remarks that are thoughtless or senseless.
そんな半端な提案で仕事が進むはずがない。
Such a foolish proposal won't move the work forward.
彼のやり方は半端で信頼できない。
His way of doing things is careless and untrustworthy.