headachehead‧ache /ˈhedeɪk/ ●●●S2W3 noun [countable]1MIa pain in your headIf you have a headache, you should take some aspirin.2informalPROBLEM a problem that is difficult or annoying to deal withSecurity is a big headache for airline operators. —headachy adjectivea headachy feelingGRAMMAR: Countable or uncountable?Headache is a countable noun: I have a headache.✗Don’t say: I have headache.COLLOCATIONSadjectivesbad/terrible/severeI’ve got a really bad headache.a splitting headache (=a very bad headache)The next day he woke up with a splitting headache.a throbbing/pounding/blinding headache (=a very bad headache)He had a throbbing headache, behind his nose and his eyes.a slight headache (also a bit of a headache spoken) (=one that is not very serious)I’d rather stay at home – I’ve got a bit of a headache.verbshave a headache (also have got a headache spoken)She’s not coming – she says she’s got a headache.get headaches/suffer from headaches (=regularly have a headache)He often gets headaches at school.give somebody a headache The music was starting to give him a headache.cause headachesThe drug can cause headaches.complain of a headache (=say that you have a headache)Your child may complain of headaches or problems seeing the blackboard. a headache goes away (=it stops) I'd like to lie down for a bit to make my headache go away, COMMON ERRORS ► Don’t say ‘a strong/heavy headache’. Say a bad headache.Don’t say ‘a little headache’. Say a slight headache or a bit of a headache.THESAURUSheadache a pain in your headLooking at a computer for a long time can give you a headache.hangover a headache and feeling of sickness that you get the day after you have drunk too much alcoholThe next day I had a terrible hangover.migraine /ˈmiːɡreɪn, ˈmaɪ- $ ˈmaɪ-/ a very bad headache, which makes you feel sick and have difficulty seeingHe has suffered from migraines all his life.