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2 N‑COUNT If you describe someone as a sucker for something, you mean that they find it very difficult to resist it. [INFORMAL ] □ [+ for ] I'm such a sucker for romance.

3 N‑COUNT The suckers on some animals and insects are the parts on the outside of their body which they use in order to stick to a surface.

4 N‑COUNT A sucker is a small device used for attaching things to surfaces. It consists of a cup-shaped piece of rubber that sticks to a surface when it is pressed flat. □  …sucker pads.

suck|le /sʌ k ^ə l/ (suckles , suckling , suckled )

1 VERB When a mother suckles her baby, she feeds it by letting it suck milk from her breast. [OLD-FASHIONED ] □ [V n] A young woman suckling a baby is one of life's most natural and delightful scenes.

2 VERB When a baby suckles , it sucks milk from its mother's breast. [FORMAL ] □ [V ] As the baby suckles, a further supply of milk is generated.

su|crose /suː kroʊs/ N‑UNCOUNT Sucrose is a common type of sugar. [TECHNICAL ]

suc|tion /sʌ kʃ ^ə n/ (suctions , suctioning , suctioned )

1 N‑UNCOUNT Suction is the process by which liquids, gases, or other substances are drawn out of somewhere. □  Dustbags act as a filter and suction will be reduced if they are too full.

2 VERB If a doctor or nurse suctions a liquid, they remove it by using a machine which sucks it away. □ [V n] Michael was showing the nurse how to suction his saliva.

3 N‑UNCOUNT [oft N n] Suction is the process by which two surfaces stick together when the air between them is removed. □  …their pneumatic robot which uses air to move and sticks to surfaces by suction.

Su|da|nese /suː dəniː z/ (Sudanese )

1 ADJ Sudanese means belonging or relating to Sudan, or to its people or culture.

2 N‑PLURAL The Sudanese are the people of Sudan.

sud|den ◆◇◇ /sʌ d ^ə n/

1 ADJ [usu ADJ n] Sudden means happening quickly and unexpectedly. □  He had been deeply affected by the sudden death of his father-in-law. □  She started to thank him, but a sudden movement behind him caught her attention. □  It was all very sudden. ●  sud|den|ness N‑UNCOUNT □  The enemy seemed stunned by the suddenness of the attack.

2 PHRASE If something happens all of a sudden , it happens quickly and unexpectedly. □  All of a sudden she didn't look sleepy any more. SYNONYMS sudden ADJ 1

hasty:They have airplane tickets in case they need to make a hasty escape.

rapid:…the rapid decline in the birth rate in Western Europe.

abrupt:His abrupt departure is bound to raise questions.

su d|den dea th N‑UNCOUNT [oft N n] Sudden death is a way of quickly deciding the winner of something such as a football or basketball game or a golf tournament when there are equal scores at the time when it would normally end. In a sudden-death situation, the first team to score a goal or the first golfer to win a hole is the winner.

sud|den|ly ◆◆◇ /sʌ d ^ə nli/ ADV [ADV with v, oft ADV adj] If something happens suddenly , it happens quickly and unexpectedly. □  Suddenly, she looked ten years older. □  Her expression suddenly altered. □  He sat down suddenly.

su|do|ku /sudəʊ kuː/ (sudokus ) N‑VAR Sudoku is a type of puzzle in which certain numbers must be arranged within a grid. The aim is to avoid repeating any number in the same row or column.

suds /sʌ dz/ N‑PLURAL Suds are the bubbles that are produced when a substance such as soap is mixed with water. □  He had soap suds in his ears.