已往[iou] hereafter
一往[ichiou] once
右往左往[uousaou] move about in confusion
往き返り[yukikaeri] round trip
往なす[inasu] to parry

往還[oukan] traffic
往航[oukou] outward voyage
往事[ouji] the past
往時[ouji] ancient times
往信[oushin] first half of a reply card

それ以来[soreirai] since then
出来るようになる[dekiruyouninaru] (something) has become possible
やって来る[yattekuru] to come along
ぴんと来る[pintokuru] to get (a joke or explanation)
以来[irai] since

遠来[enrai] foreign or distant visitor
往来[ourai] coming and going
家来[kerai] retainer
外来[gairai] external origin
外来患者[gairaikanja] outpatients