American
American English

British
British English

EFL
English as a Foreign Language

ELT
English Language Teaching

enable
...to speak English fluently

English
the English

English-speaking
anglófono

ESL
English as a Second Language

ESOL
English for Speakers of Other Languages

ESP
English for Special Purposes

ETAC
English Teaching Advisory Committee

ETIC
English Teaching Information Centre

IATEFL
...Teachers of English as a Foreign Language

idiom
an English idiom

learner
learners of business English

literature
English literature

ME
Middle English

muffin
English muffin

NATE
...Teaching of English

passable
he has a passable knowledge of English

pidgin
pidgin English

polish up
to polish up one's English

pro-English
anglófilo

RELC
Regional English Language Centre

spoken
English spoken

TEFL
...Teaching (of) English as a Foreign Language

TESL
...Teaching (of) English as a Second Language

TESOL
...Teachers of English to Speakers of Other Languages

un-English
impróprio de um inglês

we
we don't speak English