Related Clues:

• One has withdrawn from society
• Ascetic who leads an isolated life
• That's just a solitary one of the clues you might get in this
• The sole one able to get her boy up
• Half of the ermine is in 21 across but not in company
• The boy turns up after her to be all alone
• That's about a hundred and fifty one may use or keep to oneself
• Her backward boy is no company man
• There's one in there that's not a company man
• Her M with it
• So her boy is back, all by himself!
• Will he keep to himself about a hundred and fifty for employment? (7)
• He gets over to Trim all by himself
• Her backward boy keeps himself to himself
• The boy she's got is back all by himself