There are 2 definitions of livelong in English:

livelong1

Syllabification: live·long
Pronunciation: /ˈlivˌlôNG, -ˌläNG
 
/

adjective

literary
  • (Of a period of time) entire: all this livelong day I lay in the sun
    More example sentences
    • I love having no idea what time it is, all the livelong day.
    • Late in the day, I came to realise I'd not seen another living soul, apart from Dolly, the livelong day.
    • Why should your beloved canine doppelgänger be restricted to a life of culinary and sartorial monotony while you dine out, groom obsessively, and gussy yourself up all the livelong day?

Origin

late Middle English leve longe 'dear long' (see lief, long1). The change in spelling of the first word was due to association with live1.

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Word of the day grotesquerie
Pronunciation: grəʊˈtɛskəri
noun
grotesque quality or grotesque things collectively

There are 2 definitions of livelong in English:

livelong2

Line breaks: live|long
Pronunciation: /ˈlɪvlɒŋ/

Entry from British & World English dictionary

noun

  • A stonecrop, especially orpine.

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Word of the day grotesquerie
Pronunciation: grəʊˈtɛskəri
noun
grotesque quality or grotesque things collectively