Sociable: of people 人 enjoying spending time with other people 好交际的;合群的;友好的
She's a sociable child who'll talk to anyone.
她是个合群的孩子，跟谁都有话说.
I'm not feeling very sociable this evening.
今晚我不大想跟人应酬.
We had a very sociable weekend(= we did a lot of things with other people).
我们大伙过了一个十分热闹的周末.

Upbeat: positive and enthusiastic; making you feel that the future will be good 乐观的;快乐的;积极向上的
The tone of the speech was upbeat.
这次讲话的语气颇为乐观.
The presentation ended on an upbeat note.
展示简报以乐观的语调结束.

Venerable: venerable people or things deserve respect because they are old, important, wise, etc. (因年高、显要、智慧等)令人尊重的,值得敬重的,受敬佩的 formal
a venerable old man
德高望重的老人
a venerable institution/tradition
令人仰慕的机构;备受推崇的传统