full (esp. BrE)
annual (esp. BrE)
central, federal, national, public (esp. BrE)
statutory (BrE)
professional (esp. BrE), social
CEOs who were listed in a social register

attendance (BrE)
the keeping of an attendance register

electoral (esp. BrE)
residents listed on the electoral register

medical (BrE)
Dr Shaw was struck off the medical register for misconduct.

birth, marriage
class, school (both BrE)
church, parish (both esp. BrE)
guest (esp. AmE), hotel (esp. BrE)
check (AmE)
ways of reconciling bank statements with check registers

land (esp. BrE), share (BrE)
sex offenders' (BrE)
He has been placed on the sex offenders' register.

appear on, be on (both esp. BrE)
All those appearing on the register must notify the authorities of any change of address.

join (esp. BrE)
remain on (BrE)
keep (esp. BrE), maintain
They keep a register of all those who have contributed to the fund.

call, take (both BrE) (take attendance in AmE)
The teacher takes the register at the beginning of each class.

compile (esp. BrE), create, draw up (esp. BrE), establish (esp. BrE)
She was asked to draw up a register of suitable sites.

add sb/sth to
enter sb/sth in, enter sb/sth on, register sth in, register sth on (all esp. BrE)
Their names had been entered in the register as owners of the company.

remove sb from, strike sb from, strike sb off (all BrE)
He was struck off the medical register for professional misconduct.

sign (esp. BrE)
The bride and bridegroom signed the register.

contain sth, include sth
a register containing details of four million cars

office (in the UK)
The Leas married in a register office.

in a/the register
It was the last entry in the register.

on a/the register
There are 36 children on the register.

an entry in a register, an entry on a register (esp. BrE)

high, low, middle, upper
the lower register of the piano

vocal
chest, head

in a/the register
boy trebles singing in high registers

formal, informal

adopt (BrE)
He has adopted an informal register so as not to alienate his audience.

formally, officially
properly
They had not properly registered as required by state law.

legally
fully (esp. BrE)
On completion of the preregistration year, graduates become fully registered by the General Medical Council.

duly
As I reached my eighteenth birthday I duly registered for military service.

automatically
online
Players must register online before playing the game.

be required to, have to, must, need to, should
You must register the death within three days.

be eligible to
fail to
refuse to

as
the number of people officially registering as unemployed

at
He registered at his local university.

for
There is still time to register for English classes.

with
Students living away from home are required to register with a local doctor.

newly registered
the preferences of newly registered voters

barely, hardly
She had barely registered his presence.

dimly, vaguely
He vaguely registered that the women had gone.

slowly
The words registered slowly in her mind.

fail to, not seem to
His eyes failed to register Susan's surprise.
The pain that stung her hand did not seem to register.

begin to
Slowly, my mind began to register where I was: in the hospital.

Register is used with these nouns as the subject:
brain

Register is used with these nouns as the object:
birth, complaint, disagreement, disapproval, displeasure, dissent, invention, name, protest, surprise, vessel, voter