कोई न कोई (koii n koii)

pronoun/adjective An indefinite pronoun/adjective meaning 'someone or other' / 'some or other' -- it stresses that the identity is unknown or unimportant, while existence is certain. Built from कोई (koii, 'someone/some') repeated around न (n, 'not'), the same x-न-x skeleton used in चीज़ न चीज़-type expressions.
Sense 1 : someone or other (unspecified person)
pronoun Functions as the subject or object of a clause on its own, standing in for a person whose exact identity is unknown or irrelevant: कोई न कोई तो आएगा (koii n koii to aaegaa, 'someone or other will surely come').
Synonyms: कोई (koii, less emphatic)
Frequency: high
Cultural Note: This is the classic Hindi way of saying 'somebody, don't ask me who' -- very common when a mother says कोई न कोई तो घर पर होगा (koii n koii to ghar par hogaa, 'someone or other will be at home'), reassuring without naming names. The same doubling pattern shows up with things (कुछ न कुछ, kuchh n kuchh, 'something or other') and places (कहीं न कहीं, kahiin n kahiin, 'somewhere or other') -- once you know this frame, you can generate all of them.
Common Mistakes: 1) Learners often use plain कोई (koii) when they mean to emphasize 'no matter who, someone will definitely be there' -- कोई न कोई (koii n koii) adds that certainty-of-existence flavor that कोई alone lacks. 2) Don't mistake the न (n) here for a negation of the sentence -- the whole phrase is affirmative; the न is purely structural, not a 'not'.
Sample Sentences:
कोई न कोई तो घर पर होगा। Someone or other will be at home.
(koii n koii to ghar par hogaa।)
Register: Casual -- Mood: Indicative -- Tense: Future -- Voice: Active
कोई न कोई हमेशा देर से आता है। Someone or other always comes late.
(koii n koii hameshaa der se aataa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
दरवाजे पर कोई न कोई खड़ा है। Someone or other is standing at the door.
(darvaaje par koii n koii khadaa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
कल रात कोई न कोई फोन कर रहा था। Someone or other was calling last night.
(kal raat koii n koii phon kar rahaa thaa।)
Register: Casual -- Mood: Indicative -- Aspect: Continuous -- Tense: Past -- Voice: Active
जरूर कोई न कोई यहाँ आया था, क्योंकि दरवाजा खुला था। Someone or other must have come here, because the door was open.
(jaroor koii n koii yahaan aayaa thaa, kyonki darvaajaa khulaa thaa।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
अगर कोई न कोई मदद कर दे, तो काम जल्दी हो जाएगा। If someone or other helps, the work will get done quickly.
(agar koii n koii madad kar de, to kaam jaldii ho jaaegaa।)
Register: Neutral -- Mood: Subjunctive -- Voice: Active
काश कोई न कोई मेरी बात सुनता। If only someone or other would listen to me.
(kaash koii n koii merii baat suntaa।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
इतनी बड़ी पार्टी में कोई न कोई तो जरूर पहचान वाला मिल जाएगा। In such a big party, someone or other familiar is bound to be found.
(itnii badii paartii men koii n koii to jaroor pahchaan vaalaa mil jaaegaa।)
Register: Neutral -- Mood: Indicative -- Tense: Future -- Voice: Active
हर परिवार में कोई न कोई ऐसा होता है जो सबकी सुनता है। In every family, there is someone or other who listens to everyone.
(har parivaar men koii n koii aisaa hotaa hai jo sabkii suntaa hai।)
Register: Formal -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
कृपया चिंता मत कीजिए, कोई न कोई इंतज़ाम कर दिया जाएगा। Please don't worry, some arrangement or other will be made.
(kripyaa chintaa mat kiijie, koii n koii intzaam kar diyaa jaaegaa।)
Register: Formal -- Mood: Indicative -- Tense: Future -- Voice: Passive
Sense 2 : some ... or other (unspecified, modifying a noun)
adjective Precedes a noun the way कोई (koii) normally does, but insists that some instance definitely exists even though which one is unspecified: कोई न कोई बहाना (koii n koii bahaanaa, 'some excuse or other').
Synonyms: कोई (koii, less emphatic)
Frequency: high
Cultural Note: Perfect for the classic parental complaint तुम्हें कोई न कोई बहाना मिल जाता है (tumhen koii n koii bahaanaa mil jaataa hai, 'you always find some excuse or other') -- a very Delhi-household way of expressing mild exasperation at a pattern rather than one specific instance.
Common Mistakes: 1) Learners sometimes insert the noun between कोई and न कोई (e.g. wrongly splitting the phrase) -- the noun always comes after the full कोई न कोई (koii n koii) unit, not inside it.
Sample Sentences:
तुम्हें कोई न कोई बहाना मिल जाता है। You always find some excuse or other.
(tumhen koii n koii bahaanaa mil jaataa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
हर हफ्ते किसी न किसी काम से मुझे बाजार जाना पड़ता है। Every week, for some work or other, I have to go to the market.
(har haphte kisii n kisii kaam se mujhe baajaar jaanaa padtaa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
उस दिन किसी न किसी वजह से मीटिंग टल गई थी। That day, for some reason or other, the meeting got postponed.
(us din kisii n kisii vajah se miiting tal gaii thii।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
कोई न कोई किताब उठा लो, फुर्सत के समय पढ़ने के लिए। Pick up some book or other, to read in your free time.
(koii n koii kitaab uthaa lo, phursat ke samay padhne ke lie।)
Register: Casual -- Mood: Imperative -- Voice: Active
अगर किसी न किसी योजना पर काम शुरू नहीं होता, तो सब कुछ ऐसे ही अटका रहता। If work hadn't started on some plan or other, everything would have just stayed stuck like this.
(agar kisii n kisii yojnaa par kaam shuroo nahiin hotaa, to sab kuchh aise hii atkaa rahtaa।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
मुझे लगता है किसी न किसी दिन यह राज़ खुल ही जाएगा। I think that some day or other, this secret will definitely come out.
(mujhe lagtaa hai kisii n kisii din yah raaz khul hii jaaegaa।)
Register: Neutral -- Mood: Indicative -- Tense: Future -- Voice: Active
शायद किसी न किसी दुकान पर यह पुर्जा मिल जाए। Maybe at some shop or other, this part might be available.
(shaayad kisii n kisii dukaan par yah purjaa mil jaae।)
Register: Casual -- Mood: Subjunctive -- Voice: Active
जब भी वह घर आता है, किसी न किसी बहाने से पैसे मांग लेता है। Whenever he comes home, he asks for money with some excuse or other.
(jab bhii vah ghar aataa hai, kisii n kisii bahaane se paise maang letaa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
प्रबंधन को हर तिमाही में किसी न किसी समस्या से जूझना पड़ता है। Management has to grapple with some problem or other every quarter.
(prabandhan ko har timaahii men kisii n kisii samasyaa se joojhnaa padtaa hai।)
Register: Formal -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
किसी न किसी उपाय से यह समस्या हल की जा सकती है। This problem can be solved by some method or other.
(kisii n kisii upaay se yah samasyaa hal kii jaa saktii hai।)
Register: Formal -- Mood: Indicative -- Tense: Present -- Voice: Passive
बचपन में हर छुट्टी किसी न किसी रिश्तेदार के घर बीतती थी। In childhood, every vacation used to pass at some relative's house or other.
(bachpan men har chhuttii kisii n kisii rishtedaar ke ghar biittii thii।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Past -- Voice: Active
Morphology
Adjective (invariant)
invariant: कोई न कोई (koii n koii)