uncomplicated

Compared meaning: not difficult or not requiring much effort (adjective).

比较义项：简单、不难、不费力（形容词）。

• simple

  The plainest, most general word for something with few parts or steps; used broadly for tasks, designs, and ideas in neutral, everyday language.

  最基础、最通用的词，指组成部分或步骤少；广泛用于任务、设计和概念，语气中性，十分常见。

  The website has a simple layout with just one menu and one button.

  这个网站的布局很简单，只有一个菜单和一个按钮。

• easy

  Focuses on how little effort or skill a task demands, rather than its structure; the most common, casual word for 'not difficult.'

  强调完成某事所需的努力或技能很少，而不是强调结构本身；是表达“不难”最常用、最口语化的词。

  The exam was easy, so most students finished in twenty minutes.

  这次考试很容易，所以大多数学生二十分钟就做完了。

• effortless

  A stronger word implying a task looks or feels like it needs no effort at all, often praising someone's skill or grace; usually describes a performance, not an object.

  语气更强，强调某事看起来或感觉完全不费力气，常用来称赞某人的技巧或优雅，通常描述动作或表现，而不是物品。

  The dancer made the spin look effortless, as if she wasn't even trying.

  这位舞者把旋转动作做得毫不费力，好像根本没在用力。

• uncomplicated 本词

  Emphasizes the absence of complications in a process, situation, or relationship; slightly more formal than simple, often used for recipes, procedures, or relationships.

  强调过程、情况或关系中没有复杂或麻烦之处；比 simple 略正式，常用于食谱、流程或人际关系。

  We wanted an uncomplicated evening, with no plans and no surprises.

  我们想要一个简单不复杂的夜晚，没有计划，也没有意外。

All four mean 'not difficult'. Simple and uncomplicated stress few parts or steps, not effort. Easy stresses how little effort a task needs. Effortless is strongest, suggesting a performance needs no effort, praising skill. Not covered: simple as 'plain', easy as 'relaxed'.

这四个词在“简单、不难”这个义项上意思相近，但语气和侧重点不同：simple 和 uncomplicated 侧重“结构简单、没有复杂之处”，easy 侧重“所需努力少”，effortless 语气最强，强调“看起来毫不费力”，常用来称赞技巧。这里不比较 simple 的“朴素的、头脑简单的”义项，也不比较 easy 的“轻松自在的（如安乐椅）”义项。