lacking verb adjective Stress: first syllable 🤍 Save Syllables: lack-ing (2) English Definition Not available or in short supply; missing. Example Sentence His plan was lacking in practical ideas. US IPA /ˈlækɪŋ/ 🔊 Listen US UK IPA /ˈlækɪŋ/ 🔊 Listen UK Synonyms missing wanting deficient short Antonyms abundant sufficient having Share this Word Facebook WhatsApp X Telegram Copy Link