ADJ

extended, lengthy, long, prolonged
brief, limited, short
The offer is only available for a limited period
full
You have been paid for the full period of your employment with us
fixed, set
The medication is prescribed for a fixed period of time
indefinite
early, late
the late Victorian period
happy
a happy period in her life
dark, difficult, lean
a dark period in the country's history
critical
a critical period in the development of the project
interim, intervening
transitional
off-peak, peak
Christmas
medieval, Tudor, etc.
inter-war, post-war
accounting
cooling-off
The customer has the right to cancel the contract during the seven-day cooling-off period
formative
The most formative period of life is childhood
gestation, incubation
rest
training
waiting
trial
You can use the software free for a 30-day trial period
time

VERB + PERIOD

cover
the period covered by the book

PERIOD + VERB

begin, commence
end
last

PERIOD + NOUN

costume, furniture

PREP

after a ~
after a long period of waiting
during/throughout the ~
during the intervening period
for a ~
We lived in Caracas for a brief period
in/within a/ the ~
Sales have gone up in the last-five-year period
over a/the ~
There will be a reduced bus service over the Christmas period. Changes were monitored over a period of two months
within a/the ~
Committee members will not be eligible for re-election within a period of two years
~ between
the period between his resigning and finding a new job
~ from … to …
the period from 1 July to 31 December

PHRASES

the beginning/end/start of a period, a period of history, sb's period of office
Public spending was cut during his period of office
a period of study
Try breaking your period of study into 20-minute blocks
a period of time
The balance must be paid within an agreed period of time
a period of transition
a period of transition between communist rule and democratic government

ADJ

heavy, light
menstrual
monthly

VERB + PERIOD

have
I've got my period and don't feel too great
start
I was thirteen when I started my periods

PERIOD + VERB

start
stop
last

PERIOD + NOUN

pains