to be ready with all the available information about something.

There's one kid in my class who always has her hand up and always has all the answers.

I don't know what can be done — I don't have all the answers, but I do have a lot of questions.

Usage notes: often used to describe someone who wants other people to recognize their intelligence:

I used to date someone who had all the answers, and he was such a bore.

• nothing to it
• nothing to sneeze at
• nothing to write home about
• Nothing ventured, nothing gained.
• not hold breath
• not hold liquor
• not hold water
• not hold your breath
• not hold your liquor
• not hurt a fly
• not if can help it
• not if you can help it
• not in a month of Sundays
• not in my wildest dreams
• not in the business of
• not in the business of doing something
• not in the least
• not in the same league
• not in the slightest
• not judge a book by its cover
• not know beans about
• not know beans about something
• not know from Adam
• not know if are coming or going
• not know if you are coming or going