TURN SOUR

Albanian

prishem (be destroyed, break off, decay, decompose, deteriorate, fail, fall, fall out, fall to pieces, go awry, go phut, go wrong, pack up, perish, putrefy, quarrel, rot, run to seed, separate, take apart, touch), mërzit (annoy, badger, bore, bother, cloy, disgruntle, dissatisfy, get, nag, peeve, pester, plague, vex). (various references)

Arabic 

‏أصبح لاذعا. (various references)

Bulgarian 

развалям се (addle, conk, fail, go bad, taint, turn, turn off), вкисвам се, подкиселявам се. (various references)

Finnish

hapata. (various references)

French

devenir aigre. (various references)

Hebrew 

לקסוס (chew, munch). (various references)

Hungarian

megromlik (to taint). (various references)

Japanese Kanji 

饐える (to go bad, to turn sour). (various references)

Japanese Katakana 

すえる (to apply, to go bad, to lay, to place, to set, to turn sour). (various references)

Pig Latin

urntay oursay.(various references)

Russian 

скисать, киснуть (soured, souring, sours), закисать. (various references)

Serbo-Croatian

prokisnuti (acetify). (various references)

Spanish

atufarse (get angry), agriarse (sour). (various references)

Swedish

surna (acidify, grow sour, sour). (various references)

Turkish

suratı asılmak (go sour), somurtmak (be in the sulks, frown, go sour, have the pouts, lower, make face, mump, pout, sour, sulk), kesilmek (be cut, be interrupted, become, cease, close down, clot, Curdle, die away, die down, drop, dry up, go down, go off, go sour, intermit, let up, set, shear, sour, stop, surcease), ekşimek (acetify, be upset, ferment, Fox, go bad, go off, go sour, sour, turn), bozulmak (addle, break down, break up, bust, collapse, conk, decay, decline, deteriorate, disrupt, dwindle, ebb, fail, get out of hand, get out of order, go bad, go haywire, go off, go sour, go under, go wrong, lose face, perish, retrograde, retrogress, rot, sour, spoil, stale, taint, turn, upset). (various references)

Turkmen 

turюamak, mьzzermek. (various references)