opportune russian
удо́бный
comfortable, handy, cosy
convenient, opportune
своевре́менно
in time, in proper time, opportunely
своевре́менный
timely, opportune, prompt, well-timed
уме́стно
it is appropriate, it is not out of place, appropriately, aptly, in place, opportunely
своевре́менность
timeliness, opportuneness
уме́стность
appropriateness, aptness, opportuneness, timeliness