Princeton's WordNet

1. ailing, indisposed, peaked(p), poorly(p), sickly, unwell, under the weather, seedy(adj)

   somewhat ill or prone to illness

   "my poor ailing grandmother"; "feeling a bit indisposed today"; "you look a little peaked"; "feeling poorly"; "a sickly child"; "is unwell and can't come to work"

Wiktionary

1. under the weather(Adjective)

   Somewhat ill or gloomy.

2. under the weather(Adjective)

   Somewhat intoxicated or suffering from a hangover.

3. under the weather(Adjective)

   Experiencing adversity.

• siek, dronkAfrikaans
• في صِحَّةٍ سَيِّئَهArabic
• неразположенBulgarian
• mal de saúdePortuguese (BR)
• nebýt ve své kůži, necítit se dobřeCzech
• nicht in FormGerman
• sløjDanish
• αδιάθετοςGreek
• estar mal/indispuestoSpanish
• haiglaneEstonian
• مريض الاحوالFarsi
• huonovointinenFinnish
• ne pas se sentir en formeFrench
• לא מַרגיש טוֹבHebrew
• कमजोर महसूस करनाHindi
• slabog zdravljaCroatian
• nemérzi jól magát, maga alatt vanHungarian
• kurang sehat, sakitIndonesian
• illa fyrirkallaðurIcelandic
• indisposto, malaticcioItalian
• かげんが悪いJapanese
• 몸 상태가 좋지 않아Korean
• prastaiLithuanian
• neveselsLatvian
• rasa tidak sihatMalay
• niet lekkerDutch
• uopplagt, i dårlig formNorwegian
• w kiepskiej formiePolish
• mal de saúdePortuguese
• fără chefRomanian
• нездоровыйRussian
• nie vo svojej kožiSlovak
• slabo se počutitiSlovenian
• slabSerbian
• vissen, krassligSwedish
• ป่วยThai
• keyifsiz, rahatsızTurkish
• 身體狀況差Chinese (Trad.)
• той, що нездужаєUkrainian
• بیمار ہوناUrdu
• sức khỏe yếuVietnamese
• 不舒服，身体不适Chinese (Simp.)