Princeton's WordNet

1. heedless, unheeding(adj)

   marked by or paying little heed or attention

   "We have always known that heedless self-interest was bad morals; we know now that it is bad economics"--Franklin D. Roosevelt; "heedless of danger"; "heedless of the child's crying"

2. heedless, reckless(adj)

   characterized by careless unconcern

   "the heedless generosity and the spasmodic extravagance of persons used to large fortunes"- Edith Wharton; "reckless squandering of public funds"

Wiktionary

1. heedless(Adjective)

   unaware, without noticing

   Sing we joyous, all together, heedless of the wind and weather

Webster Dictionary

1. Heedless(adj)

   without heed or care; inattentive; careless; thoughtless; unobservant

• onverskillig, agterlosigAfrikaans
• غَيْر مُبالٍ، لا يَهْتَمArabic
• небреженBulgarian
• desatentoPortuguese (BR)
• nedbajícíCzech
• unbekümmertGerman
• uden at bryde sig om; ligegladDanish
• αδιάφορος, απερίσκεπτοςGreek
• despreocupado, descuidadoSpanish
• hoolimatu, -mataEstonian
• بی توجهFarsi
• välinpitämätönFinnish
• insouciant (de)French
• מִתעַלֵםHebrew
• असावधानHindi
• nepažljiv, nemaranCroatian
• figyelmetlen; mit sem törődveHungarian
• tanpa hati-hatiIndonesian
• óvarkárIcelandic
• disattento, incuranteItalian
• むとんちゃくなJapanese
• 부주의한Korean
• nekreipdamas dėmesio įLithuanian
• par spīti/nedomājot par briesmāmLatvian
• tdk mengambil peduliMalay
• zonder acht te slaan opDutch
• uaktsom, uten hensyn tilNorwegian
• nierozważnyPolish
• بی توجهPersian
• بى پرواPashto
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• nepăsătorRomanian
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• nepozornýSlovak
• ne meneč se zaSlovenian
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• obekymrad omSwedish
• ไม่เอาใจใส่Thai
• aldırmayan, dikkatsizTurkish
• 不小心的，不留意的Chinese (Trad.)
• неуважний, недбалийUkrainian
• غیر محتاط، بے توجہUrdu
• không chú ýVietnamese
• 不注意的，不留心的Chinese (Simp.)