Princeton's WordNet

1. hello, hullo, hi, howdy, how-do-you-do(noun)

   an expression of greeting

   "every morning they exchanged polite hellos"

2. Hawaii, Hawai'i, Aloha State, HI(noun)

   a state in the United States in the central Pacific on the Hawaiian Islands

Kernerman English Learner's Dictionary

1. hi(interjection)ɪ

   used to greet sb

   Hi Kylie!; Hi, how are you?

Wiktionary

1. hi(Adjective)

   , often hyphenated.

2. hi(Interjection)

   A friendly, informal, casual greeting said when meeting someone.

Origin: : American English (first recorded reference is to speech of a Kansas Indian), originally to attract attention, probably a variant of Middle English hy, hey (circa 1475) also an exclamation to call attention.

• haai!, hallo!Afrikaans
• كلمة تَحِيَّهArabic
• здрастиBulgarian
• oláPortuguese (BR)
• ahojCzech
• Hallo, HiGerman
• hejDanish
• γεια! (επιφ.)Greek
• holaSpanish
• tereEstonian
• سلامFarsi
• moiFinnish
• salut!French
• הֵי!Hebrew
• हाई (किसी को सम्बोधित करने के लिए, जैसे हाई, आप कैसे हैं)Hindi
• zdravo!Croatian
• szia!Hungarian
• hai!Indonesian
• hæ!, halló!Icelandic
• ciao!Italian
• やあJapanese
• 안녕Korean
• sveikas!Lithuanian
• sveiks!Latvian
• haiMalay
• hoiDutch
• hei!; morn!Norwegian
• cześć!Polish
• سلامPersian
• سلامPashto
• oláPortuguese
• salut!Romanian
• привет!Russian
• ahoj!Slovak
• živjo!Slovenian
• zdravoSerbian
• hej!Swedish
• สวัสดี (คำอุทานแสดงการทักทาย)Thai
• Merhaba!, SelâmTurkish
• (招呼語)嗨！Chinese (Trad.)
• привіт!Ukrainian
• ملاقات پر بے تکلفی سے بولا جانے والا کلمہUrdu
• lời chàoVietnamese
• （招呼语）嗨！Chinese (Simp.)