Green’s Dictionary of Slang

larry n.2

[Irish learaire, a lounger, an idler]

1. (Aus.) idleness.

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[Aus]C. Crowe Aus. Sl. Dict. 44: Larry, idleness.
[Aus] (ref. to 1890s) ‘Gloss. of Larrikin Terms’ in J. Murray Larrikins 203: larry: idleness.

2. (Irish) a fool.

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[Ire]Share Slanguage.
Online Sl. Dict. 🌐 larry n 1. derogatory term, MORON. Note: can apply to females even though the word is actually a male name. (‘He is such a larry!’ or ‘You larry!’).