ישן

Hebrew

יָשָׁן • (yashán) (feminine יְשָׁנָה, masculine plural יְשָׁנִים, feminine plural יְשָׁנוֹת) [pattern: קָטָל]

This adjective is never used to refer to an elderly person or an old animal. In that specific sense the adjective זָקֵן (zakén) is used instead.

יָשַׁן • (yashán) (pa'al construction, infinitive לישון / לִישֹׁן, present יָשֵׁן, future יִישַׁן, imperative יְשַׁן)

to sleep, to be asleep
- Tanach, Psalms 121:4, with translation of the New International Version:
  הִנֵּה לֹא־יָנוּם וְלֹא יִישָׁן שׁוֹמֵר יִשְׂרָאֵל.
  hiné lo yanúm vəlo yishán shomér yisraél.
  Indeed, he who watches over Israel never slumbers or sleeps.

Conjugation of יָשַׁן (see also Appendix:Hebrew verbs)

finite forms		singular		plural
non-finite forms		to-infinitive: לישון / לִישֹׁן action noun: שֵׁנָה passive participle: —
finite forms		m.	f.	m.	f.
past	first	יָשַׁנְתִּי		יָשַׁנּוּ
	second	יָשַׁנְתָּ	יָשַׁנְתְּ	יְשַׁנְתֶּם¹	יְשַׁנְתֶּן¹
	third	יָשַׁן	יָשְׁנָה	יָשְׁנוּ
present		יָשֵׁן	יְשֵׁנָה	יְשֵׁנִים	יְשֵׁנוֹת
future	first	אִישַׁן		נִישַׁן
	second	תִּישַׁן	תִּישְׁנִי	תִּישְׁנוּ	תִּישַׁנָּה²
	third	יִישַׁן	תִּישַׁן	יִישְׁנוּ	תִּישַׁנָּה²
imperative		יְשַׁן	יִשְׁנִי	יִשְׁנוּ	יְשַׁנָּה²
notes		Pronounced יָשַׁנְתֶּם and יָשַׁנְתֶּן in informal Modern Hebrew. Rare in Modern Hebrew.