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be mossy
mossy 的比较级是 mossier，最高级是 mossiest。
The old stone steps are mossy and slippery.
这些旧石阶长满苔藓，很滑。
长满苔藓的；被苔藓覆盖的
mossier — comparative of mossy
先理解核心含义，再看它在真实句子里的用法。
长满苔藓的；被苔藓覆盖的
covered in or overgrown with moss
The old stone steps are mossy and slippery.
这些旧石阶长满苔藓，很滑。
被苔藓覆盖的；长满苔藓的
Covered in or overgrown with moss.
长满苔藓的
overgrown with moss
(贬义)过时的,老式的
(used pejoratively) out of fashion; old fashioned
After the long rainy season, the old stone wall became mossy and slippery.
漫长的雨季过后，那堵旧石墙长满苔藓，变得很滑。
We followed a mossy path through the forest to reach the hidden lake.
我们沿着一条长满苔藓的小路穿过森林，来到那个隐秘的湖边。
The mossiest rocks are usually the ones closest to the waterfall.
最靠近瀑布的那些岩石往往苔藓最多。
mossy 的比较级是 mossier，最高级是 mossiest。
The old stone steps are mossy and slippery.
这些旧石阶长满苔藓，很滑。
常用来修饰自然景物，如石头、树干、地面等。
We found a quiet spot on a mossy bank.
我们在长满苔藓的岸上找到了一处安静的地方。
表示逐渐长满苔藓的过程。
The abandoned boat had become mossy after years of rain.
经过多年的雨水，那艘废弃的船长满了青苔。
这是贬义用法，形容观念、传统等过时、老式。
The newspaper article criticized the mossy traditions of the university.
这篇报纸文章批评了这所大学过时的传统。
Not this
The stone is moss.
Use this
The stone is mossy.
“moss”是名词，意为“苔藓”；表达“被苔藓覆盖的”应使用形容词“mossy”。在be动词后作表语描述主语状态时，需要用形容词而非名词。
Not this
This side of the wall is more mossy than that side.
Use this
This side of the wall is mossier than that side.
“mossy”是以“-y”结尾的双音节形容词，其比较级应把“y”变为“i”再加“-er”，即“mossier”，而不是在前面加“more”，与“easy–easier”的规则相同。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
长满苔藓的石头
An old mossy stone stood at the edge of the garden.
一块长满苔藓的旧石头立在花园边上。
长满苔藓的林地
The path disappeared under the soft mossy forest floor.
小路消失在柔软的长满苔藓的林地中。
长满苔藓的树干
She ran her hand over the damp mossy tree trunk.
她用手拂过潮湿的长满苔藓的树干。
长满苔藓的河岸
We sat on the mossy bank beside the stream.
我们坐在溪边长满苔藓的河岸上。
长满苔藓的旧墙
The garden was enclosed by a mossy old wall.
花园被一堵长满苔藓的旧墙围着。
Use mossier naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
mossy=苔藓(moss)多到覆盖表面，想象潮湿石板上的绿苔，滑腻腻的，就是长满苔藓的mossy。
语域：mixed 常见场景：nature description、informal criticism 本词字面义“长满苔藓的”为中性，多用于自然或景物描写；引申义“过时的、老式的”带贬义，比较常见于非正式口语。
按英式音标 /ˈmɒsi/，bossy、glossy、lossy 都与之押韵（/ˈbɒsi/、/ˈɡlɒsi/、/ˈlɒsi/）。注意拼写相近的 fussy（/ˈfʌsi/）和 mosey（/ˈməʊzi/）发音不同。
Dictionary facts from ECDICT, WIKTIONARY.