From extreme + -ly .
extremely (comparative more extremely , superlative most extremely )
( degree ) To an extreme degree .
2015 April 14, “America's First All-Girl Quintuplets Born in Texas Hospital”, in Time [1] :The National Center for Health Statistics' latest data indicate that quintuplets are extremely rare, with 66 reported sets of five or more babies in 2013.
to an extreme degree
Armenian: չափազանց (hy) ( čʻapʻazancʻ ) , սաստիկ (hy) ( sastik )
Bengali: প্রচণ্ড (bn) ( proconḍo )
Bulgarian: кра́йно (bg) ( krájno )
Catalan: extremadament (ca)
Chinese:
Mandarin: 非常 (zh) ( fēicháng ) , 極其 / 极其 (zh) ( jíqí ) , 極 / 极 (zh) ( jí ) , 極度 / 极度 (zh) ( jídù ) , ( used after the adjective ) 極了 / 极了 (zh) ( jíle )
Czech: extrémně (cs)
Dutch: uitermate (nl) , extreem (nl)
Esperanto: treege
Finnish: äärimmäisen (fi) , erittäin (fi)
French: extrêmement (fr) , vachement (fr) ( slang )
Galician: extremadamente
Georgian: უაღრესად ( uaɣresad ) , უკიდურესად ( uḳiduresad )
German: extrem (de) , äußerst (de) , krass (de) ( slang )
Gothic: 𐌰𐌱𐍂𐌰𐌱𐌰 ( abraba )
Greek: άκρως (el) ( ákros )
Hungarian: rendkívül (hu)
Ido: extreme (io)
Ingrian: erittee
Irish: cumasach
Italian: estremamente (it)
Japanese: 極端に (ja) ( きょくたん に, kyokutan ni) , 随分 (ja) ( ずいぶん , zuibun) , 非常に (ja) ( ひじょうに, hijō ni )
Karakhanid: اَيِغْ ( ayïɣ )
Latin: perquam
Maori: hītararī
Marathi: अत्यंत (mr) ( atyanta )
Navajo: tʼáá íiyisíí , tʼóó báhádzigo
Old Turkic: 𐰪𐰃𐰍 ( ańïɣ )
Polish: niezwykle (pl)
Portuguese: extremamente (pt)
Romanian: în mod extrem
Russian: чрезвыча́йно (ru) ( črezvyčájno ) , кра́йне (ru) ( krájne ) , экстрема́льно (ru) ( ekstremálʹno )
Spanish: extremadamente (es) , sumamente (es) , harto (es)
Swedish: extremt (sv)
Tocharian B: tanki
Ukrainian: вкрай ( vkraj )
Vietnamese: vô cùng (vi) , tột bậc (vi) , tột bực , tột cùng (vi) , hết sức (vi) , cực độ
Volapük: mu (vo)
Walloon: carapmint (wa) , teribmint (wa)