oodles /'u:dlz/ noun [pi.] ~ (of sth) (old-fashioned, informal) a large amount of sth AH;       HTI loads

oo-er /,u:'3:(r)/ exclamation (humorous) used for ex­pressing surprise, especially about sth sexual (

fa      ) mm, mm

ooh /u:/ exclamation used for expressing surprise, hap­piness, or pain (          ) mm, mm,

mm

oom-pah /'umpa:; 'u:m-/ (also 'oompah-pah) noun (informal) used to refer to the sound produced by a group of brass instruments ( fHlf       ftJ )

: an oompah band f|f UfAlA

oomph /umf/ noun [U] (informal) energy; a special good quality If A ; # ]jfr; H M : a styling product to give your hair more oomph

oops /ups; u:ps/ exclamation 1 used when sb has almost had an accident, broken sth, etc. (

) mm-. Oops! I almost spilled the wine. mm\ A tE M STo 2 used when you have done sth embarrassing, said sth rude by accident, told a secret, etc. (

lAift ) mm-. Oops, I shouldn’t have said that, mm, S oops-a-daisy /‘upsa deizi; 'Aps0/ exclamation = upsy-

DAISY

ooze /u:z/ verb, noun

* verb 1 ~ from/out of/through sth | ~ out | ~ (with) sth if a thick liquid oozes from a place, or if sth oozes a thick liquid, the liquid flows from the place slowly ( tfc Wi W ) # A , 'If 'If M A :        [v] Blood oozed out of the

wound. jfilAkifi P tf'If          O an ugly swelling oozing

with pus     0 [VN] The wound was oozing

blood. ff) P |f oil 0       0 a plate of toast oozing butter

2 ~ (with) sth if sb/sth oozes a particular characteristic, quality, etc., they show it strongly  ) 1333 exude:

[VN] She walked into the party oozing confidence. MftMl' AAitfe-Af1! o 0 [V] His voice oozed with sex appeal.

noun 1 [U] very soft mud, especially at the bottom of a lake or river ( MJfc, ) Wlk, #i2 [sing.] the

very slow flow of a thick liquid ( tfc W. ftJ ) it 'If # £ti oozy adj.

op /op; NAmE a:p/ noun (BrE, informal) = operation(I): I’m going in for my op on Monday. M M — H ^ Ah

Op. (also op.) abbr. opus : Webern’s Five Pieces, Op. 10

opacity /au'paesati; NAmE ou-/ noun [U] 1 (technical Ain) the fact of being difficult to see through; the fact of being opaque A M '14 ; tl 2 (formal) the fact of being difficult to understand; the fact of being opaque *tfi; ||$t EGQ TRANSPARENCY opal /’aupl; NAmE 'oupl/ noun [C, U] a white or almost clear semi-precious stone in which changes of colour are seen, used in jewellery H ^ If; 3® BH U: an opal

ringM&W&%i

opal es cent /.aupa'lesnt; NAmE ,oupa-/ adj. (formal or literary) changing colour like an opal ft ® ill APIS $ ft);

opaque /au'peik; NAmE ou-/ adj. 1 (of glass, liquid, etc. i&#^) not clear enough to see through or allow light through A ig BJ ftj; A ig ft ftj; W V& ft]: opaque glass Ail!iBJftJl£^ 0 opaque tights AigB/lftJ&Wtt 2 (of speech or writing i# if m^ff) difficult to understand; not clear $ fl; H $8; HI ; A ?# M H771 impene­trable: The jargon in his talk was opaque to me. jli& 022 transparent

'op art noun [U] a style of modern art that uses patterns and colours in a way that makes the images seem to move as you look at them F&lfitA, A;$Cl&ziA ( AJffl

op. cit. abbr. used in formal writing to refer to a book or an article that has already been mentioned ( #] AIE

jfc*:**,

op-code /'Dpkaud; NAmE 'aipkoud/ noun = operation code

OPEC /'aupek; NAmE 'ou-/ abbr. Organization of Petrol­eum Exporting Countries (an organization of countries that produce and sell oil)

'op-ed (also op-'ed page) noun (NAmE) the page in a newspaper opposite the editorial page that contains comment on the news and articles on particular subjects (         ) ififeHS

Open 0-w /'aupan; NAmE'ou-/ adj., verb, noun

m adj.

                NOT CLOSED }]: A 1 allowing things or people to go

through Jf ffc ft) ; ffc JF ft) : A wasp flew in the open window. -K jfiferTsiaTTF^ftJW^o o She had left the door wide open. M fE H ffc JF Ir 0          PTira closed 2 (of

sb’s eyes, mouth, etc. AftjBIgf, >^^) with eyelids or lips apart ^ JF ftj; If ftj: She had difficulty keeping her eyes open (— because she was very tired).

BSBiftJ       O He was breathing through his

open mouth, II If nf 0 EQB closed 3 spread out; with the edges apart MJF; JF $t: The flowers are all open now. feJ&jEf&JFTo <> The book lay open on the table. 4$#tJFJE;^A-t0 Pina closed 4 not blocked by anything t? HftJ: The pass is kept open all the year. 11 if—tfElUA'jgfiAlfio EES CLOSED

                NOT FASTENED li 5 not fastened or covered, so that

things can easily come out or be put in ft P ft); A ftj: Leave the envelope open. $1] £1 ± ft 0 0 The bag burst open and everything fell out. Mliftl

, A ffi ft S tb A o 6 (of clothes A M) not fastened |p

±ftj;   Her coat was open.

                NOT ENCLOSED A H H 7 not surrounded by anything;

not confined JFl?Slftj; AH AftJ: open country (= with­out forests, buildings, etc.)   a city with a lot

of parks and open spaces      0

driving along the open road (= part of a road in the country, where you can drive fast) '/&TF^]ftJii]^TFA

                NOT COVERED Jjfc A 8 with no cover or roof on fKcTFftj; B$ A ftl; ^ M ft}: an open drain — A 0 people working in the open air (= not in a building) A A

ik ftj A 0 The hall of the old house was open to the sky. IBJ^- A ftl H JT M A ft) o 0 an open wound (= with no skin covering it) A^'IA^ P

                FOR CUSTOMERS/VISITORS AA A 9 [not usually before noun] if a shop/store, bank, business, etc. is open, it is ready for business and will admit customers or visitors jf

MC; Hik: Is the museum open on Sundays?

M A tP TF Mt ? o The new store will be open in the spring. ifr^lSH;&#ATFiko O The house had been thrown open to the public.  fate lb JfMto 0

I declare this festival open.   o

CLOSED

                OF COMPETITION/BUILDING FC#;    10 if a compe­

tition, etc. is open, anyone can enter it

ff ftj ; A A nj Ul # tlQ ftJ BEia public : an open debate/championship/scholarship ATFWMrtiA; AA-nJ AAf^nT^0 She was tried in open court (= the public could go and listen to the trial). MM'&TFAAJo 0 The debate was thrown open to the audience. 11 [not before noun]

~ to sb if a competition, building, etc. is open to particular people, those people can enter it ( ttH, ^ ) M’WfcffiWfrlk-. The competition is open to young people under the age of 18. tb^ih 18 AIAA ftj# AA#iJPo o The house is not open to the public. & EQ2 closed

                AVAILABLE 1§rA 12 [not before noun] ~ (to sb) to be avail­

able and ready to use sji#M; pJFg: W7iat options are open to us? ][] W ff A # ? o Is the offer still open?    o I want to keep my Swiss

bank account open.      . GE2

CLOSED

                NOT PROTECTED ABIE 13 ~ (to sth) likely to suffer sth

such as criticism, injury, etc. M      ®ll§ H371

vulnerable: The system is open to abuse. litJ®

H ® o 0 He has laid himself wide open to political attack.

                NOT HIDDEN A lit ffi 14 known to everyone; not kept

hidden A A W £P ft);  ^- ?FftJ: an open