vedi anche: mancanza, approccio, causa, ostacolo→ostacolare, risultato, soluzione
bottleneck, bug, challenge, concern, défi, difficulté, difficulty, dilemma, enigma, hassle, inconvenience, issue, item, matter, problem, problème, puzzle, question, setbacks, stalemate, standstill, turbulence, trouble
vedi anche: impegnarsi → impegno, ostacolare
address, argue, avoir du mal, bring up, challenge, concern, encounter, évoquer, find it difficult, raise, régler, rencontrer, tackle
ambigu, baffling, challenging, dazzling, difficile, difficult, douteux, enigmatic, équivoque, fraught, mystérieux, obscure, problematic, problématique, resulting, résultant, stemming, troubling
ease, facilité, immediacy, resolution, simplicity, solution
à peine, barely, difficilement, hardly, laborieusement