孤家寡人

gūjiāguǎrén
  1. one who is cut off from others (idiom)
  2. one who has chosen to follow a solitary path
  3. (can also be an indirect way of referring to an unmarried person)

CEDICT

  1. (humble, archaic) I; we; "your unworthy king" (first-person pronoun used by monarchs, similar to the royal we)
  2. I; we; "your unworthy king" (first-person pronoun used by monarchs, similar to the royal we)
  3. loner; one without followers

Wiktionary

原为王侯自称的谦辞。后比喻孤立无助、隻身一人。

重編國語辭典

Entry Composition

1 孤 gū
  1. lone
  2. lonely
=2 家 jiā used in 家伙 jiāhuo and 家俱 jiājù
=2 家 jiā
  1. home
  2. family
  3. (polite) my (sister, uncle etc)
  4. classifier for families or businesses
  5. refers to the philosophical schools of pre-Han China
  6. noun suffix for a specialist in some activity, such as a musician or revolutionary, corresponding to English -ist, -er, -ary or -ian

classifier: 個
3 寡人 guǎrén I (first person pronoun used by royalty or nobility)