ज़रूरी (zaroorii)

adjective A single-sense adjective meaning 'necessary' or 'important', extremely common in everyday speech; related to the noun ज़रूरत (zaroorat, 'necessity, need').
Sense 1 : necessary, important
adjective Very frequently used with होना (honaa) in the pattern X ज़रूरी है (X zaroorii hai) meaning 'X is necessary', and often paired with a dative subject plus an infinitive, as in मुझे जाना ज़रूरी है (mujhe jaanaa zaroorii hai, 'it is necessary for me to go').
Synonyms: आवश्यक (aavashyak, formal), अहम (aham, important -- slightly different shade), महत्वपूर्ण (mahatvpoorn, important)
Frequency: high
Cultural Note: You'll hear ज़रूरी काम (zaroorii kaam, 'urgent/important work') used constantly as a polite way to excuse oneself from a gathering or call -- it's a socially acceptable, slightly vague reason that nobody questions. Note the nuqta: the more careful/formal spelling is ज़रूरी (zaroorii) with the dot under the ज, though ज़रूरी is often written without the nuqta in casual texting as जरूरी (jaroorii).
Common Mistakes: 1) Learners sometimes treat ज़रूरी (zaroorii) as if it must agree with the following noun's gender/number, but in the very common construction [infinitive] + ज़रूरी है (zaroorii hai), ज़रूरी (zaroorii) stays invariant because it is describing the abstract necessity, not modifying a noun directly. 2) Don't confuse ज़रूरी (zaroorii, 'necessary/important') with ज़रूर (zaroor, 'certainly, definitely') -- they look and sound similar but function completely differently, one as an adjective and one as an adverb of certainty.
Sample Sentences:
पानी पीना सेहत के लिए ज़रूरी है। Drinking water is necessary for health.
(paanii piinaa sehat ke lie zaroorii hai।)
Register: Neutral -- Mood: Indicative -- Tense: Present -- Voice: Active
मुझे अभी जाना है, एक ज़रूरी काम है। I have to go now, there's some important work.
(mujhe abhii jaanaa hai, ek zaroorii kaam hai।)
Register: Casual -- Mood: Indicative -- Tense: Present -- Voice: Active
सॉरी, कल नहीं आ पाऊँगा, कुछ ज़रूरी काम आ गया है। Sorry, I won't be able to come tomorrow, some urgent work has come up.
(sorii, kal nahiin aa paaoongaa, kuchh zaroorii kaam aa gayaa hai।)
Register: Casual -- Mood: Indicative -- Tense: Future -- Voice: Active
यह दस्तावेज़ बहुत ज़रूरी था, इसलिए मैंने इसे संभालकर रखा। This document was very important, so I kept it safely.
(yah dastaavez bahut zaroorii thaa, islie mainne ise sambhaalkar rakhaa।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
अगर यह इतना ज़रूरी न होता, तो मैं तुम्हें फ़ोन नहीं करता। If this weren't so necessary, I wouldn't call you.
(agar yah itnaa zaroorii n hotaa, to main tumhen fon nahiin kartaa।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
ज़रूरी नहीं कि हर बार तुम्हीं ग़लत हो। It's not necessary that you're wrong every single time.
(zaroorii nahiin ki har baar tumhiin ghalat ho।)
Register: Neutral -- Mood: Subjunctive -- Tense: Present -- Voice: Active
कृपया केवल ज़रूरी सामान ही अपने साथ लाएँ। Please bring only the necessary items with you.
(kripyaa keval zaroorii saamaan hii apne saath laaen।)
Register: Formal -- Mood: Imperative -- Voice: Active
बैठक में उन ज़रूरी मुद्दों पर चर्चा की जाएगी जो पिछली बार छूट गए थे। In the meeting, those important issues that were missed last time will be discussed.
(baithak men un zaroorii muddon par charchaa kii jaaegii jo pichhlii baar chhoot gae the।)
Register: Formal -- Mood: Indicative -- Tense: Future -- Voice: Passive
क्या सच में यह मीटिंग इतनी ज़रूरी है कि मुझे छुट्टी कैंसल करनी पड़े? Is this meeting really so important that I have to cancel my vacation?
(kyaa sach men yah miiting itnii zaroorii hai ki mujhe chhuttii kainsal karnii pade?)
Register: Casual -- Mood: Subjunctive -- Tense: Present -- Voice: Active
शिक्षा हर बच्चे के लिए उतनी ही ज़रूरी है जितनी रोटी। Education is as necessary for every child as bread.
(shikshaa har bachche ke lie utnii hii zaroorii hai jitnii rotii।)
Register: Literary -- Mood: Indicative -- Tense: Present -- Voice: Active
वह हमेशा कोई न कोई ज़रूरी बहाना बना लेता है मिलने से बचने के लिए। He always makes up some important-sounding excuse to avoid meeting.
(vah hameshaa koii n koii zaroorii bahaanaa banaa letaa hai milne se bachne ke lie।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
Morphology
Adjective (invariant)
invariant: ज़रूरी (zaroorii)