festal
词根词缀：
festal adj. 节日的
fest 节日 + al …的 → 节日的
festival n. 节日
fest 节日 + ival → 节日
festive adj. 节日的
fest 节日 + ive 有…性质的 → 节日的
festivity n. 喜庆
fest 节日 + ivity …力，…性；情况，状态 → 喜庆
fester v. （指伤口）溃烂
fest 仇恨 + er 反复动作，连续动作；拟声动作 → 和伤口有仇 → 溃烂
infest v. 大批出没；扰乱
in 使… + fest 仇恨 → 结仇 →〔因结仇而〕大批出没扰乱秩序 → 大批出没；扰乱
manifest adj. 显然的
mani 手 + fest 仇恨 → 仇恨得用手打 →〔恨意〕显然的
数据来源：新东方英语词汇速记大全
相关例句：
Even the people performing festal services were his friends.
甚至执行节日服务的人也是他的朋友。
As though some primitive festal act was taking place.
仿佛是在举行某种原始喜庆活动。
Happiness of the teacher below Zhu Tian is happy, festal joy!
祝天下老师幸福开心，节日快乐！
Your festal banner wave on high, The cross of Christ your King.
基督十架为你圣旗，高举随风飘扬。
After the double festal holiday, and last weekend, I should take back my heart which love play.
历经一个双节长假，又度过了一个周末，该收心回来啦。
The quantity of the musical instruments involved in Festal songs is the most because it is the poem of the neighbourhood of Zhou's capital, has complicated sources and reflects social reality deeply and widely.
《雅》之所以涉及的乐器最多，一是周王畿的诗，二是来源复杂，三是反映社会现实既深且广。