appropriate, favorable, or suitable:an opportune phrase for the occasion.
occurring or coming at an appropriate time; well-timed:an opportune warning.
Latin opportūnus convenient, equivalent. to op-op- + portu-, stem of portus access, port1 + -nus adjective, adjectival suffix (u lengthened as in tribūnustribune)
late Middle English 1375–1425
1.See corresponding entry in Unabridged apt; fortunate, propitious.
2.See corresponding entry in Unabridged convenient. Opportune,seasonable,timely refer to something that is particularly fitting or suitable for a certain time. Opportune refers to something that is well-timed and meets exactly the demands of the time or occasion:an opportune remark.Something that is seasonable is right or proper for the time or season or occasion:seasonable weather.Something that is timely occurs or is done at an appropriate time, esp. in time to meet some need:timely intervention.