Causing or tending to cause expulsion; serving to drive out or repel.
From Latin 'expellens,' present participle of 'expellere' (to drive out). The '-ent' suffix creates adjectives meaning 'being' or 'having the quality of.'
Expellent and expellant look similar but differ slightly: expellent is the adjective form (descriptive), while expellant is typically the noun (the thing doing the expelling)—a subtle distinction few people notice!
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