noun

the state or condition of being difficult.

Guy had no difficulty in making friends

strain,struggling,awkwardness,trouble,toil,labour,laboriousness,strenuousness,arduousness,pains,problems,trials and tribulations,hassle,stress,dolour,travails,complexity,complicatedness,intricacy,perplexity,knottiness,difficultness,trickiness,hardness,obscurity,abstruseness