Uncertain. Traditionally taken to be a contracted pronunciation of either an earlier form لَيِسَ (layisa), whose ultimate origin is in turn unknown or unexplored, or of لَا (lā, “not”) + an existential أَيْس (ʔays) that has a proposed etymology in Proto-Semitic *ys < *yṯ. This existential would be a native cognate to Hebrew יֵשׁ (yēš) and Akkadian 𒌇 (/išu/, “to have or own; to be”, also used copulatively), although Al-Jallad (2018) expresses doubt that it is anything more than a back-formation from the negative, in other words implying that لَا (lā, “not”) + *أَيْس (*ʔays, existential) is just a folk etymology from which أَيْس (ʔays) was created artificially. Al-Jallad proceeds to attest a form of لَيْسَ (laysa) in a Safaitic inscription dated between the first century BC and the fourth century AD, whose form, he says, invalidates the possibility of an origin in a verb لَيِسَ (layisa); he thereby argues that لَيْسَ (laysa) may either be a loan from Neo-Assyrian 𒆷𒀸𒋗 (la-aš-šu /laššu/, “there is not”) or from Taymanitic 𐪁𐪚𐪏 (lys3 /lāʾis, lāyis/, “not existing or being”).
لَيْسَ • (laysa)
This is a defective verb. It has only perfect indicative forms with a present-tense meaning. If there is a subject complement, it comes up in the accusative or (with بِـ (bi-)) the genitive.
singular | dual | plural | |
---|---|---|---|
1st person | لَسْتُ (lastu) | لَسْنَا (lasnā) | |
2nd person m | لَسْتَ (lasta) | لَسْتُمَا (lastumā) | لَسْتُمْ (lastum) |
2nd person f | لَسْتِ (lasti) | لَسْتُنَّ (lastunna) | |
3rd person m | لَيْسَ (laysa) | لَيْسَا (laysā) | لَيْسُوا (laysū) |
3rd person f | لَيْسَتْ (laysat) | لَيْسَتَا (laysatā) | لَسْنَ (lasna) |
لَيْسَ • (laysa)
لَيْسَ • (laysa)
لَيِسَ • (layisa) I, non-past يَلْيَسُ (yalyasu)
verbal noun الْمَصْدَر |
لَيَس layas | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
active participle اِسْم الْفَاعِل |
lāyis | |||||||||||
active voice الْفِعْل الْمَعْلُوم | ||||||||||||
singular الْمُفْرَد |
dual الْمُثَنَّى |
plural الْجَمْع | ||||||||||
1st person الْمُتَكَلِّم |
2nd person الْمُخَاطَب |
3rd person الْغَائِب |
2nd person الْمُخَاطَب |
3rd person الْغَائِب |
1st person الْمُتَكَلِّم |
2nd person الْمُخَاطَب |
3rd person الْغَائِب | |||||
past (perfect) indicative الْمَاضِي |
m | layistu |
layista |
لَيِسَ layisa |
layistumā |
layisā |
layisnā |
layistum |
layisū | |||
f | layisti |
layisat |
layisatā |
layistunna |
layisna | |||||||
non-past (imperfect) indicative الْمُضَارِع الْمَرْفُوع |
m | ʔalyasu |
talyasu |
yalyasu |
talyasāni |
yalyasāni |
nalyasu |
talyasūna |
yalyasūna | |||
f | talyasīna |
talyasu |
talyasāni |
talyasna |
yalyasna | |||||||
subjunctive الْمُضَارِع الْمَنْصُوب |
m | ʔalyasa |
talyasa |
yalyasa |
talyasā |
yalyasā |
nalyasa |
talyasū |
yalyasū | |||
f | talyasī |
talyasa |
talyasā |
talyasna |
yalyasna | |||||||
jussive الْمُضَارِع الْمَجْزُوم |
m | ʔalyas |
talyas |
yalyas |
talyasā |
yalyasā |
nalyas |
talyasū |
yalyasū | |||
f | talyasī |
talyas |
talyasā |
talyasna |
yalyasna | |||||||
imperative الْأَمْر |
m | ilyas |
ilyasā |
ilyasū |
||||||||
f | ilyasī |
ilyasna |
لَيَس • (layas) m
لِيس • (līs) m pl