Irish

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Etymology 1

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From ionsaigh (advance upon, attack; proceed to, approach; set about, attempt; reach, attain; seek out, verb) +‎ -ach (adjectival suffix).

Adjective

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ionsaitheach (genitive singular masculine ionsaithigh, genitive singular feminine ionsaithí, plural ionsaitheacha, comparative ionsaithí)

  1. attacking, aggressive
  2. (optics) incident
Declension
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Etymology 2

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From ionsaigh (verb) +‎ -ach.

Noun

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ionsaitheach m (genitive singular ionsaithigh, nominative plural ionsaithigh)

  1. Synonym of ionsaitheoir (attacker, aggressor)
Declension
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Mutation

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Irish mutation
Radical Eclipsis with h-prothesis with t-prothesis
ionsaitheach n-ionsaitheach hionsaitheach not applicable
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

Further reading

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