rigid

Compared meaning: hard to bend (adjective).

比较义项：僵硬、不易弯曲的（形容词）。

• stiff

  Stiff describes something that resists bending, especially the body, a material, or one's manner; it is a matter of degree and often temporary, easing with movement.

  stiff 表示某物不易弯曲，多用于身体、材料或举止，程度较轻，且往往是暂时的，活动一下就会缓解。

  My neck feels stiff after sleeping in a strange position.

  睡姿别扭之后，我的脖子感觉很僵硬。

• rigid 本词

  Rigid describes something completely unable to bend or change, often structures, materials, rules, or people; it is stronger than stiff and implies total inflexibility, usually with disapproval.

  rigid 表示某物完全无法弯曲或改变，常用于结构、材料、规则或人的性格，语气比 stiff 更强，暗示完全不通融，通常带贬义。

  The rules at his old school were extremely rigid and strict.

  他以前那所学校的校规极其死板严格。

Stiff describes something that resists bending, especially the body or a material; it is a matter of degree and often eases with movement. Rigid describes something completely unable to bend or change, often structures, rules, or people; it is stronger than stiff, suggesting total inflexibility.

这两个词都表示“僵硬、不易弯曲”，常形容身体、材料或规则，但程度和语气不同：stiff 程度较轻，多指身体或姿态一时的僵硬，活动后会缓解；rigid 程度更强，表示完全无法弯曲或改变，常用于结构、规则或性格，带有“死板、不通融”的贬义色彩。