adjective

relaxed and tolerant in attitude or manner.

a relaxed, easy-going atmosphere

relaxed,even-tempered,equable,placid,mellow,mild,happy-go-lucky,serene,blithe,carefree,free and easy,nonchalant,insouciant,unruffled,unworried,untroubled,imperturbable,unexcitable,amiable,considerate,undemanding,forbearing,patient,tolerant,lenient,liberal,broad-minded,open-minded,understanding,generous,indulgent,good-natured,good-humoured,pleasant,agreeable,cordial,laid-back,together,unflappable,unfazed