official, formal, legal ☊ 
正式 → ☊ 
chính thức 
formal like: chính thức → →
offiziell ☊ 
chính thức ☊ 
官方的 ☊ guān fāng de amtlich ☊ chính thức ☊ 官方的 ☊ guān fāng de offiziell ☊ chính thức ☊ ☊ amtlich ☊ chính thức ☊ ☊ announce sth: They haven't formally announced their engagement yet. ☊ announce ☊
appropriate for sth: Jeans are not appropriate for a formal party. ☊ appropriate ☊
The plan will be submitted to the committee for official approval. ☊ approval ☊
Senior management have given their seal of approval (= formal approval) to the plans. ☊ approval ☊
for the attention of... (= written on the envelope of an official letter to say who should deal with it) ☊ attention ☊
Complete a claim form (= an official document which you must use in order to request money from an organization). ☊ claim ☊
a formal complaint ☊ complaint ☊
The offer has been accepted, subject to contract (= the agreement is not official until the contract is signed). ☊ contract ☊
The government has declared war on (= officially stated its intention to stop) illiteracy. ☊ declare ☊
Official projections of the spread of AIDS have mercifully been revised downwards (= it has been predicted that the disease will not spread as fast as had earlier been suggested). ☊ downwards ☊
She completed her formal education in 1995. ☊ education ☊
official government estimates of traffic growth over the next decade ☊ estimate ☊
formal evening dress ☊ formal ☊
The dinner was a formal affair. ☊ formal ☊
He kept the tone of the letter formal and businesslike. ☊ formal ☊
She has a very formal manner, which can seem unfriendly. ☊ formal ☊
formal legal processes ☊ formal ☊
to make a formal apology/complaint/request ☊ formal ☊
Formal diplomatic relations between the two countries were re-established in December. ☊ formal ☊
It is time to put these arrangements on a slightly more formal basis. ☊ formal ☊
He has no formal teaching qualifications. ☊ formal ☊
Young children are beginning their formal education sometimes as early as four years old. ☊ formal ☊
'How do you do?' she said formally. ☊ formally ☊
The accounts were formally approved by the board. ☊ formally ☊
Although not formally trained as an art historian, he is widely respected for his knowledge of the period. ☊ formally ☊
to hand in your notice/resignation (= formally tell your employer that you want to stop working for them) ☊ hand sth in (to sb) ☊
A notice informed the guests that formal dress was required. ☊ inform ☊
an informal arrangement/meeting/visit ☊ informal ☊
Discussions are held on an informal basis within the department. ☊ informal ☊
The aim of the trip was to make informal contact with potential customers. ☊ informal ☊
an informal expression ☊ informal ☊
Is English an official language in your country? ☊ language ☊
The official launch date is in May. ☊ launch ☊
to pass a law (= officially make it part of the system of laws) ☊ law ☊
They seldom complained—officially at least. ☊ at least ☊
'I didn't realise it was a formal occasion.' 'Obviously!' (= I can see by the way you are dressed) ☊ obviously ☊
official responsibilities ☊ official ☊
the Prime Minister's official residence ☊ official ☊
This was her first official engagement. ☊ official ☊
He made an official visit to Tokyo in March. ☊ official ☊
an official announcement/decision/statement ☊ official ☊
according to official statistics/figures ☊ official ☊
the official biography of the President ☊ official ☊
An official inquiry has been launched into the cause of the accident. ☊ official ☊
The country's official language is Spanish. ☊ official ☊
I intend to lodge an official complaint (= to complain to sb in authority). ☊ official ☊
The news is not yet official. ☊ official ☊
I only knew the official version of events. ☊ official ☊
The official story has always been that they are just good friends. ☊ official ☊
an official function/reception ☊ official ☊
The official opening is planned for October. ☊ official ☊
The library will be officially opened by the local MP. ☊ officially ☊
We haven't yet been told officially about the closure. ☊ officially ☊
The college is not an officially recognized English language school. ☊ officially ☊
Many of those living on the streets are not officially homeless. ☊ officially ☊
I'm not officially supposed to be here. ☊ officially ☊
Officially, he resigned because of bad health. ☊ officially ☊
the official opening of the new hospital ☊ opening ☊
The argument continued until the chairman called them both to order (= ordered them to obey the formal rules of the meeting). ☊ order ☊
No official permission has been given for the event to take place. ☊ permission ☊
In public he supported the official policy, but privately he was sure it would fail. ☊ privately ☊
He left school with no formal qualifications. ☊ qualification ☊
Don't quote me on this (= this is not an official statement), but I think he is going to resign. ☊ quote ☊
to seek international/official/formal recognition as a sovereign state ☊ recognition ☊
register sb + adj.: register (sb) as sth: She is officially registered (as) disabled. ☊ register ☊
official/State secrets ☊ secret ☊
English became the official language for business in spite of the fact that the population was largely Chinese. ☊ in spite of sth ☊
a formal/ a public/a written/an official statement ☊ statement ☊
Street sport is informal and based on whatever people want to play. ☊ street ☊
an unofficial/a one-day strike ☊ strike ☊
'Register' is the term commonly used to describe different levels of formality in language. ☊ term ☊
The official title of the job is 'Administrative Assistant'. ☊ title ☊