Flying solo is a phrase that is used to describe someone who is doing something ALONE, without the help of others. The term can be broken down into three words: HAN (3 letters), ALONE (5 letters), and LONE (4 letters). The fourth word, STAG (4 letters), is a variation of the word 'ALONE' and is often used in the phrase 'STAG party, ' which is a gathering of men without women. All together, the phrase 'flying solo' is used to describe someone who is going it ALONE, without the help of others.