वजह (vajah)

noun/postposition A common everyday noun meaning 'reason' or 'cause', used constantly in both casual and formal speech; also appears in a few fixed postposition-like phrases built on it.
Sense 1 : reason, cause
noun, feminine
Synonyms: कारण (kaaran), सबब (sabab, somewhat literary/dated)
Frequency: high
Cultural Note: In everyday Delhi speech, वजह (vajah) is the default word for 'reason' -- more common in conversation than the more formal-sounding कारण (kaaran), which shows up more in writing or careful speech. You'll hear this word constantly when someone is explaining why they're late, why a plan changed, or why they did something.
Common Mistakes: 1) Learners often forget वजह (vajah) is feminine and wrongly pair it with masculine agreement, e.g. saying यह वजह है (yah vajah hai, 'this is the reason') correctly but then slipping on adjectives or verbs modifying it later in a sentence. 2) क्या वजह है (kyaa vajah hai, 'what is the reason') is the natural way to ask 'why', but learners sometimes overuse क्यों (kyon) instead when they actually want to ask someone to name a specific cause.
Sample Sentences:
मुझे नहीं पता कि वो लेट क्यों है, वजह कुछ भी हो सकती है। I don't know why he's late, the reason could be anything.
(mujhe nahiin pataa ki vo let kyon hai, vajah kuchh bhii ho saktii hai।)
Register: Casual -- Mood: Subjunctive -- Tense: Present -- Voice: Active
उसने अपनी गलती की कोई वजह नहीं बताई। He didn't give any reason for his mistake.
(usne apnii galtii kii koii vajah nahiin bataaii।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
क्या वजह है कि तुम आजकल इतने चुप रहते हो? What is the reason that you've been so quiet these days?
(kyaa vajah hai ki tum aajkal itne chup rahte ho?)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
प्लीज़ मुझे असली वजह बता दो, मैं समझ जाऊँगी। Please tell me the real reason, I'll understand.
(pliiz mujhe aslii vajah bataa do, main samajh jaaoongii।)
Register: Casual -- Mood: Imperative -- Voice: Active
अगर उसके पास कोई ठोस वजह होती, तो वो ज़रूर बताता। If he had had a solid reason, he definitely would have told us.
(agar uske paas koii thos vajah hotii, to vo zaroor bataataa।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
मीटिंग रद्द होने की वजह अभी तक साफ़ नहीं हुई है। The reason for the meeting's cancellation still hasn't become clear.
(miiting radd hone kii vajah abhii tak saaf nahiin huii hai।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
शायद कोई पुरानी वजह हो जिसकी वजह से वो अब भी नाराज़ है। Maybe there's some old reason why he's still upset.
(shaayad koii puraanii vajah ho jiskii vajah se vo ab bhii naaraaz hai।)
Register: Neutral -- Mood: Subjunctive -- Tense: Present -- Voice: Active
इस हादसे की सही वजह अभी तक पता नहीं चल पाई है। The exact reason for this accident hasn't been determined yet.
(is haadse kii sahii vajah abhii tak pataa nahiin chal paaii hai।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
उसकी हर बात के पीछे कोई न कोई वजह ज़रूर होती है। There's always some reason or other behind everything he says.
(uskii har baat ke piichhe koii n koii vajah zaroor hotii hai।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
कंपनी छोड़ने की वजह के बारे में पूछा गया, पर उसने कुछ नहीं कहा। He was asked about the reason for leaving the company, but he said nothing.
(kampnii chhodne kii vajah ke baare men poochhaa gayaa, par usne kuchh nahiin kahaa।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Passive
बिना किसी वजह के वो मुझसे नाराज़ हो गई थी। She got upset with me without any reason.
(binaa kisii vajah ke vo mujhse naaraaz ho gaii thii।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
Sense 2 : because of, due to
postposition Used in the fixed compound postposition की वजह से (kii vajah se) after an oblique noun, meaning 'because of' -- e.g. बारिश की वजह से (baarish kii vajah se, 'because of the rain').
Synonyms: के कारण (ke kaaran), के चलते (ke chalte)
Frequency: high
Cultural Note: की वजह से (kii vajah se) is the everyday go-to for 'because of' in spoken Hindi, doing the same job as के कारण (ke kaaran) but sounding less bookish -- you'll hear it constantly in explanations, excuses, and news reports alike.
Common Mistakes: 1) Learners sometimes drop से (se) and just say की वजह (kii vajah), which sounds incomplete -- the full phrase की वजह से (kii vajah se) is needed to mean 'because of'. 2) Confusing word order: the reason-noun comes before की वजह से (kii vajah se), not after, unlike English 'because of the rain' vs. बारिश की वजह से (baarish kii vajah se, 'the rain's because-of' = 'because of the rain').
Sample Sentences:
बारिश की वजह से सड़कों पर पानी भर गया। Because of the rain, the roads got flooded.
(baarish kii vajah se sadkon par paanii bhar gayaa।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
ट्रैफिक की वजह से मुझे हर दिन देर हो जाती है। Because of the traffic, I end up being late every day.
(traiphik kii vajah se mujhe har din der ho jaatii hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
उसकी तबीयत की वजह से पार्टी रद्द करनी पड़ेगी। Because of his health, we will have to cancel the party.
(uskii tabiiyat kii vajah se paartii radd karnii padegii।)
Register: Neutral -- Mood: Indicative -- Tense: Future -- Voice: Active
कोहरे की वजह से कई फ्लाइटें रद्द कर दी गई हैं। Because of the fog, several flights have been cancelled.
(kohre kii vajah se kaii phlaaiten radd kar dii gaii hain।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Passive
प्लीज़ शोर मत करो, इसकी वजह से बच्चा जाग जाएगा। Please don't make noise, because of it the baby will wake up.
(pliiz shor mat karo, iskii vajah se bachchaa jaag jaaegaa।)
Register: Casual -- Mood: Imperative -- Voice: Active
अगर उसकी लापरवाही की वजह से नुकसान होता, तो कंपनी उसे नौकरी से निकाल देती। If there had been a loss because of his carelessness, the company would have fired him.
(agar uskii laaparvaahii kii vajah se nuksaan hotaa, to kampnii use naukrii se nikaal detii।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
मुमकिन है कि उसकी गैरहाज़िरी की वजह से मीटिंग टल जाए। It's possible that the meeting might get postponed because of his absence.
(mumkin hai ki uskii gairahaazirii kii vajah se miiting tal jaae।)
Register: Formal -- Mood: Subjunctive -- Voice: Active
आर्थिक मंदी की वजह से बाज़ार में सुस्ती छाई हुई है। Because of the economic slowdown, sluggishness has spread across the market.
(aarthik mandii kii vajah se baazaar men sustii chhaaii huii hai।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
उसकी ईमानदारी की वजह से सब उसका सम्मान करते हैं। Because of his honesty, everyone respects him.
(uskii iimaandaarii kii vajah se sab uskaa sammaan karte hain।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
प्रदूषण की वजह से दिल्ली में सांस लेना मुश्किल हो गया है। Because of pollution, breathing has become difficult in Delhi.
(pradooshan kii vajah se dillii men saans lenaa mushkil ho gayaa hai।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
नेटवर्क की खराबी की वजह से कॉल बीच में ही कट गई। Because of a network glitch, the call got disconnected midway.
(netvark kii kharaabii kii vajah se kol biich men hii kat gaii।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
Morphology
Noun
(sg.f.direct): वजह (vajah)
(sg.f.oblique): वजह (vajah)
(pl.f.direct): वजहें (vajahen)
(pl.f.oblique): वजहों (vajahon)