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de|vel|op|men|tal /d I ve ləpme nt ^ə l/ ADJ [usu ADJ n] Developmental means relating to the development of someone or something. □  …the emotional, educational, and developmental needs of the child.

de|ve l|op|ment ba nk (development banks ) N‑COUNT A development bank is a bank that provides money for projects in poor countries or areas. [BUSINESS ]

de|vi|ant /diː viənt/ (deviants )

1 ADJ Deviant behaviour or thinking is different from what people normally consider to be acceptable. □  …the social reactions to deviant and criminal behaviour. ●  de|vi|ance /diː viəns/ N‑UNCOUNT □  …sexual deviance, including the abuse of children.

2 N‑COUNT A deviant is someone whose behaviour or beliefs are different from what people normally consider to be acceptable.

de|vi|ate /diː vie I t/ (deviates , deviating , deviated ) VERB To deviate from something means to start doing something different or not planned, especially in a way that causes problems for others. □ [V + from ] They stopped you as soon as you deviated from the script. [Also V ]

de|via|tion /diː vie I ʃ ^ə n/ (deviations ) N‑VAR Deviation means doing something that is different from what people consider to be normal or acceptable. □ [+ from ] Deviation from the norm is not tolerated.

de|vice ◆◇◇ /d I va I s/ (devices )

1 N‑COUNT A device is an object that has been invented for a particular purpose, for example for recording or measuring something. □  …an electronic device that protects your vehicle 24 hours a day.

2 N‑COUNT A device is a method of achieving something. □ [+ for ] They claim that military spending is used as a device for managing the economy.

3 PHRASE If you leave someone to their own devices , you leave them alone to do as they wish. □  Left to his own devices, Osborn is a fluent–and often original–guitarist. COLLOCATIONS device NOUN 1

noun + device : explosive, incendiary, safety, storage; listening, navigation, recording, tracking

adjective + device : electronic, mechanical, medical, nuclear; handheld, mobile, portable; high-tech, simple, sophisticated

verb + device : design, develop, test; detonate, install, plant SYNONYMS device NOUN 1

gadget:…kitchen gadgets including toasters, kettles and percolators.

tool:I find the best tool for the purpose is a pair of shears.

instrument:…instruments for cleaning and polishing teeth.

appliance:He learned to use the vacuum cleaner, washing machine and other household appliances.

implement:…knives and other useful implements.

dev|il /de v ^ə l/ (devils )

1 N‑PROPER In Judaism, Christianity, and Islam, the Devil is the most powerful evil spirit.

2 N‑COUNT A devil is an evil spirit. □  …the idea of angels with wings and devils with horns and hoofs.

3 N‑COUNT You can use devil to emphasize the way you feel about someone. For example, if you call someone a poor devil , you are saying that you feel sorry for them. You can call someone you are fond of but who sometimes annoys or irritates you an old devil or a little devil . [INFORMAL , FEELINGS ] □  I felt sorry for Blake, poor devil.

4 PHRASE If you say that you are between the devil and the deep blue sea , you mean that you are in a difficult situation where you have to choose between two equally unpleasant courses of action.

5 PHRASE People say speak of the devil , or in British English talk of the devil , if someone they have just been talking about appears unexpectedly. □  Well, talk of the devil!

6 PHRASE When you want to emphasize how annoyed or surprised you are, you can use an expression such as what the devil , how the devil, or why the devil . [INFORMAL , EMPHASIS ] □  'What the devil's the matter?'