1. (adv.)however nevertheless; yet; on the other hand; in spite of that: We have not yet won; however, we shall keep trying.
2. however to whatever extent or degree; no matter how: However much you spend, I will reimburse you.
3. however how?; how under the circumstances?: However did you escape?
4. (conj.)however in whatever way, manner, or state: Arrange your hours however you like.
Etymology: (1350–1400)
Definition of 'however'
Princeton's WordNet
1. (adverb)however, nevertheless, withal, still, yet, all the same, even so, nonetheless, notwithstanding despite anything to the contrary (usually following a concession) "although I'm a little afraid, however I'd like to try it"; "while we disliked each other, nevertheless we agreed"; "he was a stern yet fair master"; "granted that it is dangerous, all the same I still want to go"
2. (adverb)however by contrast; on the other hand "the first part was easy; the second, however, took hours"
3. (adverb)however to whatever degree or extent "The results, however general, are important"; "they have begun, however reluctantly, to acknowledge the legitimacy of some of the opposition's concerns"
4. (adverb)however in whatever way or manner "Victory, however it was brought about, was sweet"; "however he did it, it was very clever"
1. (adverb)however ***indicates an idea that contrasts with one just mentioned They said prices would not rise. The next week, however, they did.; ***He's very ill. However, there is hope.
2. however it does not matter which way or to what degree However you look at it, the news is bad.; However hard I tried, I couldn't make it work.; Let him sing it however he wants to.
Definition of 'however'
Webster Dictionary
1. (adverb)however in whetever manner, way, or degree
2. (adverb)however at all events; at least; in any case
3. however nevertheless; notwithstanding; yet; still; though; as, I shall not oppose your design; I can not, however, approve of it
Definitions of however 
Afrikaans: hoe dit ook al sy
Arabic: مَع ذلك، ولكن، بالرَّغْم 
Bulgarian: обаче
Brazilian: contudo
Czech: nicméně
German: wie auch immer
Danish: alligevel; på trods heraf
Greek: ωστόσο, εντούτοις
Spanish: sin embargo, no obstante
Estonian: ometi
Farsi: اگرچه
Finnish: kuitenkin
French: cependant
Hebrew: אוּלָם
Hindi: फिर भी
Croatian: medutim
Hungarian: azonban, mindamellett, mé
Indonesian: walaupun demikian
Icelandic: samt (semáður)
Italian: tuttavia, comunque
Japanese: しかし
Korean: 그럼에도 불구하고
Lithuanian: vienok, tačiau
Latvian: tomēr; taču
Malay: walau bagaimana pun
Dutch: desondanks
Norwegian: likevel, imidlertid, men
Polish: jednakże
Persian: اگرچه
Pashto: اګرکه
Portuguese: contudo
Romanian: totuşi
Russian: несмотря на это
Slovak: avšak
Slovenian: vendar
Serbian: pa ipak
Swedish: emellertid, fast
Thai: ไม่ว่าจะอย่างไร
Turkish: buna rağmen
Taiwanese: 可是
Ukrainian: проте, однак
Urdu: تاہم
Vietnamese: tuy vậy; song
Chinese: 可是
