三人行，必有我师(焉)

部首
饣 part 1 shí
饭, rice/meal; 饮, to drink; 饰, to decorate/to play a role 饭 fàn, rice/meal; 饮 yǐn, to drink; 饰 shí, to decorate/to play a role
https://www.mdbg.net/chinese/dictionary?cdqrads=184

词汇
定, to fix; 规定, to set rules; 肯定, certain(ly)/positive/to be certain 定 dìng, to fix; 规定 guīdìng, to set rules; 肯定 kěndìng, certain(ly)/positive/to be certain
https://mandarinbean.com/new-hsk-4-word-list/

Guardian:
你们几个别替他掩饰了, stop playing a role on his account
肯定有女朋友吧, you must have a girlfriend, right?

Me:
吃饭的时候不要太热闹。
他把我们的活动规定了。