easy

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 本词

  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

  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。

Compared meaning: physically comfortable and relaxed (adjective).

比较义项：身体上感到舒适、放松（形容词）。

• comfortable

  The most general and common word; describes anything (furniture, clothes, temperature, situations) that causes no physical discomfort, without implying warmth or a small space.

  最通用常见的词；可以形容任何不让人身体不适的事物（家具、衣物、温度、场合），不一定带有温暖或空间小的含义。

  The new mattress is so comfortable that I fall asleep in minutes.

  这张新床垫非常舒服，我几分钟就能睡着。

• easy 本词

  In this sense it appears mainly in fixed expressions like 'easy chair' or 'feel easy', meaning relaxed and free of tension; used freely it sounds old-fashioned or literary.

  在这个意义上主要出现在“easy chair”（安乐椅）或“feel easy”（感到轻松自在）等固定搭配中，表示放松、没有紧张感；如果自由使用会显得老式或书面化。

  Grandpa dozed off in his easy chair by the fireplace.

  爷爷在壁炉旁的安乐椅上打起了盹。

• cozy

  Suggests warmth plus a small, enclosed, homely space that feels pleasant and safe, often used for rooms, blankets, or gatherings.

  强调温暖，并带有空间小、封闭、家一般惬意安全的感觉，常用来形容房间、毯子或聚会等。

  The candlelit room felt cozy on the cold winter night.

  在寒冷的冬夜里，烛光下的房间显得温馨舒适。

• snug

  Emphasizes being closely sheltered and warm, as if wrapped or tucked in against cold or danger; often used for small spaces or being under covers.

  强调被严实地包裹、遮蔽而感到温暖，仿佛紧紧地被围住以抵御寒冷或危险；常用于形容狭小空间或裹在被子里的状态。

  The children were snug in their beds while the storm raged outside.

  暴风雨在外面肆虐，孩子们裹着被子舒适安稳地躺在床上。

All four describe physical comfort. Comfortable is the most general term. Easy appears in fixed phrases like 'easy chair'. Cozy suggests warmth in a small space. Snug means wrapped and warm. Not covered: easy as 'not difficult', comfortable as 'financially secure', snug as 'tight clothes'.

这几个词都可以形容让人感到身体舒适、放松的状态，但语气强弱和使用场合不同：comfortable最通用，cozy和snug偏重温暖、私密的空间感，easy在这个意义上较书面、多见于固定搭配。这里不比较easy的“不难”义、comfortable的“经济宽裕”义，以及snug表示衣物“紧身合适”的用法。

Compared meaning: without difficulty or effort (adverb).

比较义项：容易地，毫不费力地（副词）。

• easily

  The standard, general-purpose adverb; freely combines with almost any verb and is natural in both formal and casual writing.

  标准的通用副词，几乎可以自由搭配各种动词，正式或口语语体中都很自然。

  She easily lifted the heavy box without any help.

  她毫不费力地就搬起了那个沉重的箱子，没有借助任何帮助。

• easy 本词

  An informal adverb limited to fixed expressions and casual speech, such as take it easy, go easy, or win easy; it cannot freely modify ordinary verbs the way easily does.

  口语化副词，仅用于固定搭配和随意口语中，例如 take it easy、go easy、win easy，不能像 easily 那样自由修饰普通动词。

  Go easy on the salt — the soup is already salty enough.

  盐少放一点——汤已经够咸了。

Both mean 'without effort'. Easily is the standard adverb, combining freely with almost any verb. Easy as an adverb is informal, limited to fixed phrases like 'take it easy' or 'go easy'; it cannot modify other verbs freely. Not covered: easy meaning 'not difficult'.

这两个词都表示毫不费力地，但 easily 是标准副词，可以自由修饰几乎任何动词，书面语和口语都能用；easy 用作副词是口语用法，只出现在少数固定搭配中，例如 take it easy、go easy、win easy，不能像 easily 那样自由搭配其他动词。这里不比较 easy 作形容词表示容易的这一义项。