extensive, major
minor
essential, necessary, vital
emergency, immediate, urgent
quick, rapid
costly, expensive
constant
temporary
running (BrE)
The drivers carried small toolkits for making running repairs.

warranty
building, home (esp. AmE), house, housing (BrE), roof, structural
car, engine, vehicle
highway (in the US), motorway (in the UK), road
electrical, TV
shoe
muscle, tissue
nutrients needed for energy and tissue repair

carry out, do, make, perform
complete
It is unlikely that the repairs will be completed on time.

be in need of, need, require
be closed for
The museum is currently closed for structural repairs.

undergo
The highway is undergoing major repairs.

cost sth

work
job
The damage meant a nine-month repair job.

project
service
They provide a 24-hour repair service.

business
bill, cost
centre/center, facility, garage, shop, yard
a repair yard for fishing boats

guy (informal, esp. AmE), man (usually repairman), technician (esp. AmE)
Why don't you get a TV repairman to have a look at it before you buy a new one?

crew, team
part (AmE)
kit
manual (esp. AmE)

beyond repair
The vase was damaged beyond repair.

for repair
I took my bike in for repair.

under repair
We were given a courtesy car to use while our car was under repair.

repair to
to carry out repairs to the track

a backlog of repairs
Investment is needed to reduce the backlog of repairs.

in good repair, in poor repair
The tools are old but in good repair.

keep sth in good repair, keep sth in repair (formal, esp. BrE)
As a tenant you are required to keep the house in good repair.

repair and maintenance
They are responsible for the repair and maintenance of the buildings.

a … state of repair
The barn was in a poor state of repair.

properly, successfully
Most of the damage has now been successfully repaired.

poorly
completely, fully
quickly
easily

try to
help (to)
Natural vitamins in the shampoo will help repair damaged hair.

the cost of repairing sth
They estimate the cost of repairing the damaged roads at £1 million.

have sth repaired
I'm having my car repaired next week.

surgically repaired (esp. AmE)
His surgically repaired knee is bothering him.

Repair is used with these nouns as the subject:
electrician

Repair is used with these nouns as the object:
breach, car, damage, defect, engine, faucet, fault, hernia, leak, ligament, machine, machinery, main, problem, puncture, relation, rift, road, shoe, tendon, wing