1
general::
Phrase(s): by herself [and] by himself
1. with no one else present; alone. • She hates to go to strange places by herself. • He sat by himself at a table big enough for six people. 2. with the help of no one else. • The two-year-old boy can get dressed by himself. • Susan is unable to get there by herself.
McGrawhill's American Idioms And Phrasal Verbs