Watch the kid properly with ちゃんと

Vocabulary Explanation: Do it properly with ちゃんと

Conan and Ran end up with Kogoro investigating a kidnapping case. As Kogoro questions the butler, Conan steps in with his own questions. The butler asks who the child is.

小五郎(こごろ):: 「いやー、わたしの知(し)り合(あ)いの子(こ)でして…」; “Well, it's the child of an acquaintance, and...”; 「蘭(らん)！！　ちゃんと面倒(めんどう)見(み)てろ！！」; “Ran! Properly look after him!”

Vocabulary

知(し)り合(あ)い

acquaintance

Combines 知(し)る (to know) with 合(あ)い (mutual relationship)
Refers to someone you know but aren't necessarily close with

子(こ)

child

ちゃんと

properly

Adverb emphasizing doing something correctly or as expected
Often used in commands or instructions to stress proper execution
Here used to say Ran needs to watch the Conan properly, the way a kid should be watched over

面倒(めんどう)見(み)る

to look after

面倒(めんどう)見(み)る
面倒(めんどう)見(み)て (te-form)
面倒(めんどう)見(み)てろ (imperative continuative)

Idiomatic expression literally meaning "see the trouble"
Means to take care of or look after someone

Grammar

いやー: Interjection expressing hesitation or mild embarrassment
〜でして: Polite form of です (humble/formal explanation)
〜てろ: Imperative form of 〜ている (command to continue doing something)