Idioms Starting with "K"

to not know someone at all, similar to 'know someone from Adam'

to have no familiarity or connection with someone

to have comprehensive knowledge of a subject

to have complete knowledge or understanding of a subject

to be familiar with the procedures or routine of a situation

to be well-acquainted with the details or procedures of a task

to be aware of the situation or the facts, especially in a difficult or challenging context

to be aware of the hidden truths or secrets in a situation, especially those that could be damaging or controversial

to be aware of the current situation or trends to make informed decisions