粗末|そまつsomatsu[1]atamadaka (head-high)

1. na-adjective, nouncrude; rough; plain; humble; shabby; poor-quality; low-quality
   道具どうぐを粗末そまつに使つかうな。↗

   Don't handle these tools roughly.

• Synonym粗悪そあくNeutralRefers to inferior quality, as in 「粗悪品」; it stresses that the quality itself is bad and carries a derogatory nuance.
• Synonym粗雑そざつNeutralSuggests something done roughly or sloppily, as in 「粗雑な作り」 or 「粗雑な扱い」; it points to careless workmanship rather than poor quality.
• Synonym粗いあらいNeutralMeans coarse or unrefined, as in 「目が粗い」 or 「仕事が粗い」; it points to texture or the way work is done.
• SynonymぞんざいNeutralRefers to a careless, discourteous manner, as in 「ぞんざいな口のきき方」; it is about the attitude with which you treat things or people.
• RelatedみすぼらしいNeutralDescribes a shabby, sorry-looking appearance, as in 「見すぼらしい格好」; it stresses that something looks poor and unkempt.
• Antonym立派りっぱNeutralMeans splendid or impressive, the opposite of the shabby sense of 「粗末」.
• Antonym上等じょうとうNeutralMeans superior or top-grade, contrasting with 「粗末」 in its sense of poor quality.
• Antonym丁寧ていねいNeutralMeans careful and attentive, the opposite of 「粗末」 in the sense of rough handling, as in 「丁寧に扱う」.

Use 「粗末」 for something shabby or for treating it carelessly, as in 「粗末にする」. For poor quality say 「粗悪」, for rough workmanship 「粗雑」, for a careless attitude 「ぞんざい」; the opposites are 「立派」 and 「丁寧」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 作つくりが荒あらく、品質ひんしつが悪わるいこと。
2. ものをぞんざいに扱あつかうこと。