A ‣ Permitting and agreeing that something may happen: verbs 
All these verbs are formal and many are typically found in newspapers.
verb | meaning | example |
accede | accept, but often associated with initial unwillingness | The factory owner acceded to the workers’ demands. |
acquiesce /ˌækwiˈes/ | permit something to happen, but often associated with a degree of secrecy or conspiracy | The Foreign Minister acquiesced in the plan to restrict imports from certain countries. |
assent | agree to something, often associated with plans, proposals, ideas, etc. | The shareholders assented to the takeover. |
authorise | give official permission | Only authorised people are allowed entry. |
condone | approve or allow something which most people consider to be wrong | The judge condoned the use of reasonable force by police officers. |
countenance | consider giving assent or permission, often used in negative contexts | No government would ever countenance abolishing taxes altogether. |
endorse | give official approval to something | The cabinet has endorsed a proposal to change the way universities are funded. |
B ‣ Permitting: phrasal expressions 
The committee have been given carte blanche to investigate the problem and come up with a solution. [/ˌkɑː(r)t ˈblɑːntʃ/ complete freedom to do whatever they think necessary; formal]
The city has given the go-ahead for / given the green light to the new car park. [given permission for the building to start; informal]
C ‣ Prohibiting and disapproving: verbs 
verb | meaning | example |
bar | officially exclude, forbid someone access to something | Three students were barred from using the library because they had damaged books. |
clamp down | use your full power to prevent or limit something | The government has decided to clamp down on illegal immigration. |
outlaw | make something illegal | Parliament has passed a bill outlawing smoking while driving. |
veto /ˈviːtəʊ/ | use your official power to forbid | The President has vetoed the plan to open membership of the club to the public. |
Common mistakes
Regardless is not an adjective but an adverb. It means in spite of something. It can be used on its own: Her parents said she couldn’t go to the party but she went to it regardless.
Or it can be followed by a phrase with of: They built the extension to their house regardless of the fact that they had not received formal planning permission.