subside
表示逐渐减弱或下降，无需宾语。
The floodwaters slowly subsided.
洪水慢慢退去了。
平息；减弱；消退
下降；下沉；（洪水）退去；沉淀；沉降；沉到底部；沉淀,如渣滓。；向下落；变低；下降；下沉。；归于平静；恢复平静；安定下来；变得安宁。
to become calmer, quieter, or less intense; to settle down
常指风浪、情绪、疼痛等渐渐缓和
沉到底部；沉淀,如渣滓。
To sink or fall to the bottom; to settle, as lees.
向下落；变低；下降；下沉。
To fall downward; to become lower; to descend; to sink.
归于平静；恢复平静；安定下来；变得安宁。
To fall into a state of calm; to be calm again; to settle down; to become tranquil.
一般现在时
The floodwaters gradually subside after the rain stops.
雨停后，洪水逐渐退去。
一般过去时
Her anger subsided when she heard the apology.
听到道歉后，她的怒气平息了。
现在完成时
The pain has subsided significantly since yesterday.
自昨天起，疼痛已显著减轻。
After the storm, the floodwaters slowly subsided.
暴风雨过后，洪水慢慢退去。
用法提示：subside 在这里表示“（水位）下降、退去”。
She waited in the hallway until her anger subsided before going back inside.
她待在走廊里，直到怒气平息后才走回去。
用法提示：subside 在这里表示“（情绪）平息、减弱”。
The pain in my knee usually subsides after I rest for a while.
我膝盖的疼痛通常在我休息一会儿后会减轻。
用法提示：subside 在这里表示“（疼痛）减轻、消退”。
表示逐渐减弱或下降，无需宾语。
The floodwaters slowly subsided.
洪水慢慢退去了。
后接名词，表示逐渐转变成某种状态。
The shouting subsided into murmurs.
喊叫声渐渐变成了低语。
后接名词，表示减弱到某种程度。
Her anger subsided to a mild irritation.
她的愤怒逐渐平息，变成轻微的不快。
diminish强调数量、强度等逐渐减小，常可取代subside
abate较正式，多用于风暴、疾病、疼痛等
ease强调困难、痛苦等减轻
decrease通用，但不如subside强调逐渐消退的过程
grammar · medium
易错句子The medicine subsided his fever quickly.
正确表达His fever subsided quickly.
subside为不及物动词，不能直接接宾语；应改为让主语（如fever）自行发生动作。
grammar · medium
易错句子After the heavy rain, the flood waters subsided down.
正确表达After the heavy rain, the flood waters subsided.
subside本身已蕴含向下减弱的意思，添加down多余且不自然。
subside 指减弱或下沉，subsist 指维持生存
迅速平息
The pain subsided quickly after taking the medication.
服药后疼痛迅速平息了。
洪水退去
After three days, the flood finally subsided.
三天后，洪水终于退去了。
风暴减弱
The storm subsided by morning.
到早晨时风暴减弱了。
肿胀消退
Applying ice helped the swelling subside.
冰敷有助于肿胀消退。
逐渐平息
Her anger gradually subsided as she listened to his explanation.
听着他的解释，她的怒气逐渐平息了。
陷入（某种状态）
After the argument, they subsided into silence.
争论之后，他们陷入了沉默。
prefix
root
derived noun from subside
word with same prefix
Dictionary facts from ECDICT, WIKTIONARY.