By accident
Occasionally and by accident are semantically related. In some cases you can use "Occasionally" instead an adverb phrase "By accident".
Occasionally
Occasionally adverb - On some occasions.
By accident and occasionally are semantically related. Sometimes you can use "By accident" instead an adverb "Occasionally".
Mutual synonyms
Both terms in one sentence
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While he's generally the ultimate Cloud Cuckoo Lander, he occasionally has moments of hypercompetence, if only by accident, and rarely screws up missions by himself.
Source: Western Animation / Invader Zim -
Does Not Know His Own Strength: Toby, the orphan pig who is as big as some adults, occasionally rips doors off their frames by accident.
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Jay insists on historical accuracy in his VR settings, but occasionally adds something that he stumbled upon by accident or simply because it's awesome regardless of accuracy.
Source: Literature / Net Force
Cite this Source
Occasionally and By accident. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/by_accident/occasionally
By accident & Occasionally. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/by_accident/occasionally>.
Occasionally or By accident. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/by_accident/occasionally.
Google Ngram Viewer shows how "by accident" and "occasionally" have occurred on timeline