松懈的英文：
floppiness
laxation
relax
relax one's attention
slack off
slacken off

参考例句：

To make slack;weaken.
使松懈，减弱

Not flagging;untiring.
不松懈的;不倦的

I was lax in my duties.
我对本职工作马虎松懈。

Afraid that morale might slacken.
害怕士气会松懈

You must not relax your efforts.
你不可以松懈你的努力。

Don't let down even if you're nearing the destination.
即使快到目的地也不要松懈。

Never slackening or stopping;unremitting
决不松懈的;永不停止的;持久的

Security was lax at the firms smaller plant.
该公司的小厂里的保全工作比较松懈

With only two days to go we can't afford to relax.
只有两天时间了,我们可不能松懈.

slacken discipline;afraid that morale might slacken.
放松纪律;害怕士气会松懈

floppiness是什么意思：
n. 下垂;松懈;懒散

The floppy disk controller reported an error that is not recognized by the floppy disk driver.
软盘控制器报告软盘驱动程序不能识别的错误。

An African elephant has large floppy ears.
非洲象有一对肥大，松软下垂的耳朵。

I have some very important documents on this floppy disk.
在这个软盘上我存了一些重要文件。

laxation是什么意思：
n. 松弛,松懈,轻泻
(中医学)导便法
relax是什么意思：
v.（使）轻松；放宽；松懈；宽慰；缓和

relax the bowels
通便

You must not relax your efforts.
你不可以松懈你的努力。

He relaxed for a moment.
他浑身放松了一会。