Erratic
Improper
Improper adjective - Not appropriate for a particular occasion or situation.
Erratic and improper are semantically related in incorrect topic. Sometimes you can use "Erratic" instead an adjective "Improper".
Nearby Word: improperly
Mutual synonyms
Both words in one sentence
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Too Dumb to Live: The AI behaviors in this game have a tendency to be erratic which causes NPC scavengers to die mostly from non-combat causes (malnutrition, dehydration, hypothermia, poisoning, improper or lack of first-aid).
Source: Video Game / Neo Scavenger
Cite this Source
Improper and Erratic. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/erratic/improper
Erratic & Improper. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/erratic/improper>.
Improper or Erratic. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/erratic/improper.
Google Ngram Viewer shows how "erratic" and "improper" have occurred on timeline