considerable, extreme, great, high, incredible, intense, severe
Separation is a time of high emotional stress.

acute, chronic
excessive, undue
compensation claims for undue stress in the workplace

added, greater, heightened, increased
low
daily
the daily stress of teaching

emotional, mental, psychological, social
post-traumatic
He has suffered post-traumatic stress since the crash.
treatment for post-traumatic stress disorder

occupational, work-related
family (esp. AmE)
The program helps workers with work-related and family stress.

environmental
Different organisms react differently to environmental stress.

economic, financial
The high mortgage payments put them under severe financial stress.

level
Many workers experience a high level of stress in their daily life.

cause, create
A divorce causes children great emotional stress.

avoid, remove
add to, increase
alleviate, decrease, ease, lessen, minimize, reduce, relieve
There are many things an employer can do to ease employees' stress.

be under, endure, experience, have, suffer, suffer from, undergo
He's been under a lot of stress lately.

cope with, handle, manage, stand, take
He's had to give up his job as leader of the project—he just couldn't take the stress.

bring sth about, bring sth on, cause sth, trigger sth
an illness brought on by stress

level
high stress levels

control, management
Staff are encouraged to go on stress-management courses.

response
The release of the stress hormone cortisol is part of the human stress response.

hormone
reduction, relief
buster (informal), reliever (both esp. AmE)
Physical exercise is a great stress reliever.

under stress
He broke under stress and had to leave.

a source of stress
An overcrowded workplace can be a major source of stress.

a symptom of stress
Tiredness is one of the most common symptoms of stress.

enormous, great
particular, special
equal
undue

lay, place, put
I must lay great stress on the need for secrecy.

with the stress on
a study of child development, with the stress on acquisition of social skills

stress on
There's been a lot of stress on getting drug sellers off the streets.

main, major, primary, strong
secondary, weak
sentence, word

carry, have, take
Italian words usually have the main stress on the penultimate syllable in the word.
The first syllable takes the stress.

place, put
mark
Mark the primary stress in each word.

fall, go
Where does the stress fall in ‘psychological’?

pattern

stress on
There's a stress on the second syllable.

enormous, high
low
constant
equal
There is equal stress on all parts of the structure.

undue
Avoid exercise that puts undue stress on the knees.

mechanical
The majority of sports injuries are due to excessive mechanical stress on joints, ligaments and muscles.

exert, set up
The tower exerts an enormous stress on the walls.
The movements set up stresses in the earth's crust.

apply, put, subject sth to
Stress is applied to the wood to make it bend.
Standing all day puts stress on your feet.
The buttresses are subjected to constant stress.

bear, take, withstand
increase, reduce
transfer, transmit
calculate
Engineers calculated the stresses borne by each of the bridge supports.

fracture
He was diagnosed with a stress fracture in his right foot.

stress on
Cycling puts very little stress on the joints.

under stress
Some woods warp under stress.