1
slacken sth
可用于具体或抽象事物。
He slackened his grip on the rope.
他放松了对绳子的握力。
松弛；减缓；减弱
先理解核心含义，再看它在真实句子里的用法。
松弛；减缓；减弱
To gradually become less tight, intense, or active.
He slackened his grip on the rope.
他放松了对绳子的握力。
不及物用法：变松、变缓
强度或紧绷度逐渐降低；变松；滞后。
To gradually decrease in intensity or tautness; to become slack; to lag.
使松弛,使不紧绷,或减弱强度。
To make slack, less taut, or less intense.
通过与水化合使失去内聚力；使熟化。
To deprive of cohesion by combining chemically with water; to slake.
slacken
Base
原形
slackens
3rd person
第三人称单数
slackening
-ing
现在分词
slackened
Past
过去式
slackened
Past participle
过去分词
The rope slackens as the load is removed.
当负载被移除时，绳子变松了。
He slackened his grip on the handle.
他松开了握在把手上的手。
The wind has slackened since morning.
自早晨以来风已经减弱了。
规则动词，过去式和过去分词加-ed。
The storm finally slackened, and we could see the stars.
暴风雨终于减弱了，我们能看到星星了。
She slackened her pace to admire the view.
她放慢脚步去欣赏风景。
Never slacken your efforts even when the end seems near.
即使终点似乎就在眼前，也绝不要松懈你的努力。
可用于具体或抽象事物。
He slackened his grip on the rope.
他放松了对绳子的握力。
主语常为速度、努力、紧张程度等。
The pace of work slackened after lunch.
午饭后工作节奏放慢了。
Not this
Please slack the rope a little.
Use this
Please slacken the rope a little.
Slack 是形容词或名词，不能作动词；表示“使松弛”应用动词 slacken。
Not this
You should slacken the tightness of your grip.
Use this
You should slacken your grip.
Slacken 可直接接宾语表示使该物松弛，无需添加“tightness”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
放松，松劲；减少努力
The team can't slacken off now that we're in the final.
既然我们已经进入决赛，队伍现在不能松懈。
放慢速度
He slackened the pace when he saw how tired his partner was.
看到同伴那么累，他放慢了速度。
松开手；放松控制
She slackened her grip on the rope to let it slide.
她松开手中的绳子，让它滑动。
放松缰绳；放宽控制
The manager decided to slacken the reins and let employees work from home.
经理决定放宽控制，让员工在家办公。
放松纪律
Don't slacken discipline just because the project is going well.
不要因为项目进展顺利就放松纪律。
放松努力，松懈
She refused to slacken her efforts until the work was finished.
在完成工作之前，她拒绝放松努力。
松懈；减缓；减弱
You need to slacken off a little and avoid overworking yourself.
你需要稍微放松一下，避免过度劳累。
放松缰绳；放宽控制
The coach decided to slacken the reins and let the players try their own tactics.
教练决定放松控制，让球员们尝试自己的战术。
放松掌控；松手
We must not slacken our grip on safety standards.
我们绝不能放松对安全标准的把控。
Use slacken naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想：slacken = slack（松弛）+ en（使），像把绷紧的绳子松开，力度或紧张感渐渐减弱。
语域：mixed 常见场景：书面描述速度或强度变化、放松绳索或张力等操作说明、正式或叙事性散文 slacken 在具体操作（如放松绳索）和抽象描述（如速度、强度减弱）中都可能出现，但整体比较常见于书面或较正式场合；口语中表示“放松、松开”更常用 loosen，表示“放慢”更常用 slow down。
Can be used transitively (e.g., slacken a rope) or intransitively (e.g., the rope slackened).
Dictionary facts from ECDICT, WIKTIONARY.