The idiom "a man of action" refers to a person who prefers to act on their ideas rather than just talking about them. It describes someone who is capable of taking decisive and practical steps towards achieving their goals, instead of simply theorizing or planning.

The idiom "tie the knot" is used to describe the act of getting married or entering into a committed relationship. It can also refer to the act of completing a task or achieving a goal.

The idiom "up to the mark" means that someone or something is performing well, meets expectations or is of good quality. It can also indicate that someone is behaving properly, correctly, or as required.

The idiom "a tall order" means a difficult or challenging task that requires a great deal of effort to accomplish. It often refers to something that is too big or overwhelming to handle, especially when it comes to personal or emotional matters.

The idiom "cloud nine" is used to describe someone who is extremely happy or ecstatic about something. It is a metaphorical expression that means the person feels like they are floating on a cloud nine, which is a legendary place in mythology where gods and goddesses lived.