How to use lack in a sentence. Example sentences with the word lack. lack example sentences. You know lack of sleep can make you grumpy and foggy. You may not know what it can do to your sex life, memory, health, looks, and even ability to lose weight. Many of these people lack the basic necessities of life. 13th Century. First Known Use of lack. 13th century. 2 lack. noun. Simple Definition of lack lack (lăk) n. 1. Deficiency or absence: Lack of funding brought the project to a halt. 2. A particular deficiency or absence: Owing to a lack of supporters, the. Lack definition, deficiency or absence of something needed, desirable, or customary: lack of money; lack of skill. See more. Synonyms of Lack: absence, dearth, want— Antonyms of Lack: presence—Find the right word. the fact or state of being absent Synonyms: absence, dearth, want… Could lack of sleep be causing you to gain weight? Think about it: If you’re feeling sleepy at work, you may be tempted to reach for a cup of coffee (or several. More example sentences Jagger's conclusions are similar: ‘There is a shocking lack of evidence in this case,’ she says. The Iowa straw poll is just another. Synonyms for lack at Thesaurus.com with free online thesaurus, antonyms, and definitions. Dictionary and Word of the Day. lack - Translation to Spanish, pronunciation, and forum discussions. WordReference.com | Online Language Dictionaries. English-Spanish Dictionary | lack.