deep | light | REM

drift into/off to, drop off to, get to, go (back) to | cry/sob yourself to | get, sleep, snatch
Close your eyes and get some sleep now. | Tom was in the front room sleeping the sleep of the dead. | I snatched a few hours'' sleep in the afternoon.

need | survive on
They seem to survive on only a few hours'' sleep a night.

induce, lull/send sb to
using drugs to induce sleep | The quiet music soon sent her to sleep.

drift in and out of
He drifted in and out of sleep all night.

lose
Don''t lose sleep over it - we''ll sort everything out in the morning.

disrupt | catch up on
I used Saturday to catch up on my sleep.

feign
I feigned sleep when the ticket inspector came round.

come
Sleep came to her in snatches.

overcome sb, overtake sb
Sleep finally overtook me.

pattern | deprivation, loss | apnoea

during ~
your heart rate during sleep

in your ~
He often walks and talks in his sleep.

a lack of sleep
suffering from a lack of sleep

a wink of sleep
I won''t get a wink of sleep with that noise downstairs.

long | little, short | dead, deep, heavy, sound | good, restful | light | disturbed, exhausted, fitful, restless, uneasy
I woke up early after a disturbed sleep.

dreamless, peaceful | drunken | beauty
Sorry but I need my beauty sleep.

need | have
Did you have a good sleep?

be in
I was in a deep sleep when the phone rang.

drift into, fall into, sink into
I immediately fell into a dead sleep.

awake/awaken/wake (sb) from
He woke from a fitful sleep with a headache.

a (good/poor) night''s sleep
You''ll feel better after a good night''s sleep.

properly, soundly, well
I haven''t slept properly for weeks. | The children were all sleeping soundly. | Did you sleep well last night?

peacefully, quietly | easier, easily, quiet
When the murderer is caught we can all sleep easier in our beds at night.

badly, fitfully, uneasily | deeply, heavily
He was exhausted and slept deeply.

lightly
She always slept very lightly so I had to be careful not to wake her.

barely, hardly, scarcely
She felt as if she had hardly slept.

a little | alone | together

be unable to, can''t/couldn''t
I couldn''t sleep so I got up and went downstairs.

try to
You must be very tired. Try to sleep a little.

let sb | put sb/sth to
You should always put babies to sleep on their backs. | We had to have our dog put to sleep (= humanely killed because it was so ill).

for
I only slept for four hours that night.

through
She slept right through the storm.

with
Everyone knows she sleeps with the boss.

not sleep a wink
(= not sleep at all) I didn''t sleep a wink last night.

sleep late
Let them sleep late on Saturday morning if they want to.

sleep like a baby/log
(= sleep very well),

sleep rough
the problem of young people who sleep rough in the streets