| irrupt | (verb) increase rapidly and in an uncontrolled manner | Synonyms: explode |
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| (verb) erupt or intensify suddenly | Synonyms: break open, burst out, erupt, flare, flare up |
| (verb) enter uninvited | Synonyms: intrude |
| irruption | (noun) a sudden violent entrance; a bursting in | - |
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| (noun) a sudden violent spontaneous occurrence (usually of some undesirable condition) | Synonyms: eruption, outbreak |
| (noun) a sudden sharp increase in the relative numbers of a population | - |
| irruptive | (adjective) of igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro | Synonyms: plutonic |
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