Princeton's WordNet

1. tactless, untactful(adj)

   lacking or showing a lack of what is fitting and considerate in dealing with others

   "in the circumstances it was tactless to ask her age"

2. inept, tactless(adj)

   revealing lack of perceptiveness or judgment or finesse

   "an inept remark"; "it was tactless to bring up those disagreeable"

Kernerman English Learner's Dictionary

1. tactless(adjective)ˈtækt lɪs

   not showing or using tact

   a tactless man; Her answer was tactless.

Wiktionary

1. tactless(Adjective)

   having no tact; unaware or intentionally inconsiderate of someone else's feelings

Webster Dictionary

1. Tactless(adj)

   destitute of tact

• taktloosAfrikaans
• غَيْر لَبِقArabic
• нетактиченBulgarian
• inconvenientePortuguese (BR)
• netaktníCzech
• taktlosGerman
• taktløsDanish
• αδιάκριτος, αδέξιοςGreek
• sin tactoSpanish
• taktituEstonian
• بی تدبیرFarsi
• tahditonFinnish
• grossierFrench
• חֲסַר טַקטHebrew
• बेशऊर, असामयिकHindi
• bez takta, netaktičanCroatian
• tapintatlanHungarian
• tanpa siasatIndonesian
• óháttvísIcelandic
• indelicato, (privo di tatto)Italian
• 手ぎわの悪いJapanese
• 재치 없는Korean
• netaktiškasLithuanian
• netaktisksLatvian
• tdk bijaksanaMalay
• tactloosDutch
• taktløs, ufin, tankeløsNorwegian
• nietaktownyPolish
• بی تدبیرPersian
• بي سليقې، بي مهارتهPashto
• inconvenientePortuguese
• fără tactRomanian
• бестактныйRussian
• netaktný, bezohľadnýSlovak
• netaktenSlovenian
• netaktičanSerbian
• taktlösSwedish
• ซึ่งไม่มีไหวพริบThai
• patavatsızTurkish
• 不老練的，不圓滑的Chinese (Trad.)
• нетактовнийUkrainian
• بے تکا، بے شعورUrdu
• không tế nhịVietnamese
• 不老练的，不圆滑的Chinese (Simp.)