► bacterio logical /baek.tiaria'lDC^ikl; NAmE -.tiria- 'la:d3-/ adj. bac-teri-olo-gist noun bad CHf /baed/ adj noun, adv.

madj. (worse /w3:s; NAmE W3:rs/, worst /w3:st; NAmE W3:rst/)

►                UNPLEASANT ^ A 7 tfe 1 unpleasant; full of problems

fn] j® J& $£ W; (Hi :  bad news/weather/

dreams/habits Tfff=LE; 17 A A;   M^iO I’m having

a really bad day. A A $J H ill 7 <> 0 It was the worst

experience of her life. IP i ife ^ £ 4s ft If l| $! M W. 0 Smoking gives you bad breath. j® A -IH& P Jl: o 0 Things are bad enough without our own guns shelling us.

►                POOR QUALITY A Ifi 2 of poor quality; below an accept­able standard M it H #J; 7 A (ft :       bad conditions/

driving Mg ffl^^J^Jlfc&Aoabad copy/diet

A;     0 f thought it was a very bad

article, jfc VXJ] IP Ji —      0 This isn’t as

bad as I thought. IIMJr (ft IP & ^ 0 0 That’s not a bad idea. IPAA^SAfto

►                NOT GOOD AT STH 7 Jf-fc 3 - at sth/at doing sth (of a

person A) not able to do sth well or in an acceptable wayJUjA; 7M; 7#7 SHU poor: a bad teacher 0 You’re a bad liar!       0

He’s a bad loser (= he complains when he loses a game). ltfcll'/h$ll7^2tftAo 0 She is so bad at keeping secrets.

►                SERIOUS /“Jr 4 serious; severe /“Jr(ft; HlJ^lft: You’re

heading for a bad attack of sunburn,    JrHi#j(ft0

0                  The engagement was a bad mistake. & #jf     ^

Alto o My headache is getting worse.

WTo

►                NOT APPROPRIATE 7 Aii 5 [only before noun] not appro­priate in a particular situation 7iliA(ft;        (ft:

1                  know that this is a bad time to ask for help.

0 He now realized that it had been a bad decision on his part.        #iRf!j|iflfef£7“A7

►                WICKED ffi m 6 morally unacceptable 7 it H (ft ; JSI

(ft:    The hero gets to shoot all the bad guys. iA;A^

o He said I must have done

something bad to deserve it.

►                CHILDREN JL | 7 [usually before noun] (especially of children X Is J L m) not behaving well j£ ; 7 Je HTH naughty: Have you been a bad boy? Ail A 7®/?

►                HARMFUL A A 8 [not before noun] ~ for sb/sth harmful; causing or likely to cause damage If; Jg 3^C iF: Those shoes are bad for her feet. IP ^ li A (ft JSP o 0 Weather like this is bad for business. ix# A ATAllA#

►                PAINFUL 9 [usually before noun] (of parts of the body #A nPA) not healthy; painful A It (ft; ^?S(ft: I’ve got a bad back. 4£#£P^3i0

►                FOOD til 10 not safe to eat because it has decayed

(ft; (ft: Put the meat in the fridge so it doesn’t

gobad.m®mm'M&, »r,

►                TEMPER/MOOD J$A; 11 ~ temper/mood the state of feeling annoyed or angry A; fFtf tA&: It put me in a bad mood for the rest of the day. IP ^ it $c H

AM&7*7l7 Ifo

►                GUILTY/SORRY fitly; j&1£ 12 feel ~ to feel guilty or

sorry about sth ^l!]J[5|$C (       ) : She felt bad about

leaving him. M 0 gf Jf jffe ffl ]|S5 3\ M. $C 0 0 Why should I want to make you feel bad?

►                ILL/SICK AH; Atfflg 13 feel/look ~ to feel or look

ilVsickjfcf^tfflR; lifJAH; ffiWHA; A£7$?: I’m afraid I’m feeling pretty bad.  ffc % # fg X

«.

►                EXCELLENT 14 (badder, baddest) {slang, especially NAmE) good; excellent IePJM&A FA/p

IT??!! Most idioms containing bad are at the entries for the nouns and verbs in the idioms, for example be bad news (for sb/sth) is at news. A^i£ A bad (ft >]iff, %

^obebad

news (for sb / sth) A ill news T o can’t be bad (,informal) used to try to persuade sb to agree that sth is