All alone
By himself and all alone are semantically related. In some cases you can use "By himself" instead an adverb phrase "All alone".
By himself
All alone and by himself are semantically related. You can use "All alone" instead an adverb phrase "By himself".
Mutual synonyms
Both terms in one sentence
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Also, in I, at one point the hero winds up in an area all alone, allowing him to get an entire party's worth of EXP by himself, fighting enemies that aren't all that hard to defeat.
Source: Franchise / Breath of Fire
Cite this Source
By himself and All alone. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/all_alone/by_himself
All alone & By himself. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/all_alone/by_himself>.
By himself or All alone. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/all_alone/by_himself.
Google Ngram Viewer shows how "all alone" and "by himself" have occurred on timeline