उबलना (ubalnaa)

verb The basic intransitive verb for liquid coming to a boil; also used figuratively for a person 'boiling over' with anger. Its transitive counterpart उबालना (ubaalnaa, 'to boil something') is a separate lemma.
Sense 1 : to boil (of a liquid)
verb, intransitive
Frequency: high
Cultural Note: Ask any Delhi kitchen and you will hear this verb constantly around chai time -- दूध उबल रहा है (doodh ubal rahaa hai, 'the milk is boiling') is practically a household alarm, since milk boiling over on the stove is a minor domestic emergency everyone has lived through.
Common Mistakes: 1) Learners often reach for उबालना (ubaalnaa) when they mean this word -- पानी उबल रहा है (paanii ubal rahaa hai, 'the water is boiling') describes the water itself changing state, while उबालना is what you do *to* the water. Mixing up the two is the single most common error with this verb pair. 2) Because it is intransitive, it never takes ने (ne) in the past tense: पानी उबला (paanii ublaa, 'the water boiled'), not पानी ने उबला।
Sample Sentences:
दूध उबल रहा है, जल्दी गैस बंद करो! The milk is boiling, quick, turn off the gas!
(doodh ubal rahaa hai, jaldii gais band karo!)
Register: Casual -- Mood: Imperative -- Aspect: Continuous -- Tense: Present -- Voice: Active
पानी उबल गया है, अब चायपत्ती डाल दो। The water has boiled, now put in the tea leaves.
(paanii ubal gayaa hai, ab chaaypattii daal do।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Present -- Voice: Active
सर्दियों में मैं रोज़ रात को दूध उबालती थी, पर यह अपने आप उबलता भी है अगर स्टोव तेज़ हो। In winters I used to boil milk every night, but it also boils on its own if the stove is on high.
(sardiyon men main roz raat ko doodh ubaaltii thii, par yah apne aap ubaltaa bhii hai agar stov tez ho।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Past -- Voice: Active
अगर तुम ध्यान न दो तो दूध उबल जाता है और पूरा चूल्हा गंदा हो जाता है। If you don't pay attention, the milk boils over and the whole stove gets dirty.
(agar tum dhyaan n do to doodh ubal jaataa hai aur pooraa choolhaa gandaa ho jaataa hai।)
Register: Casual -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
पानी सौ डिग्री सेल्सियस पर उबलता है। Water boils at one hundred degrees Celsius.
(paanii sau digrii selsiyas par ubaltaa hai।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
अरे, दाल उबलती रहेगी, तुम आराम से बैठो। Relax, the lentils will keep boiling, you just sit comfortably.
(are, daal ubaltii rahegii, tum aaraam se baitho।)
Register: Casual -- Mood: Indicative -- Tense: Future -- Voice: Active
जब पानी उबल जाए, तब आलू डालना। When the water boils, add the potatoes.
(jab paanii ubal jaae, tab aaloo daalnaa।)
Register: Neutral -- Mood: Subjunctive -- Voice: Active
यदि तुमने गैस तेज़ न की होती, तो दूध इतना नहीं उबलता। If you hadn't turned the gas up so high, the milk wouldn't have boiled over this much.
(yadi tumne gais tez n kii hotii, to doodh itnaa nahiin ubaltaa।)
Register: Casual -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
बर्तन में पानी उबाला जा रहा है ताकि बोतलें साफ़ की जा सकें। Water is being boiled in the pot so that the bottles can be cleaned.
(bartan men paanii ubaalaa jaa rahaa hai taaki botlen saaf kii jaa saken।)
Register: Neutral -- Mood: Indicative -- Aspect: Continuous -- Tense: Present -- Voice: Passive
पहाड़ों पर पानी कम तापमान पर ही उबलने लगता है। In the mountains, water starts boiling at a lower temperature.
(pahaadon par paanii kam taapmaan par hii ubalne lagtaa hai।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
सूप को धीमी आग पर उबलने दो, तेज़ मत करना। Let the soup boil on a low flame, don't turn it up high.
(soop ko dhiimii aag par ubalne do, tez mat karnaa।)
Register: Casual -- Mood: Imperative -- Voice: Active
Sense 2 : to seethe with anger, boil over emotionally
verb, intransitive
Synonyms: भड़कना (bhadaknaa, to flare up), खौलना (khaulnaa, to seethe, of blood)
Frequency: medium
Cultural Note: This is the same mental image English speakers use with 'blood boiling,' so it transfers naturally -- खून उबल उठा (khoon ubal uthaa, 'his blood boiled up') is a very natural way to describe someone's fury rising suddenly.
Common Mistakes: 1) This figurative sense almost always appears with a cause marked by से (se) -- गुस्से से उबलना (gusse se ubalnaa, 'to boil with anger') -- rather than को, which learners sometimes default to given other emotion constructions.
Sample Sentences:
जब उसने सच सुना, तो उसका खून उबल उठा। When he heard the truth, his blood boiled up.
(jab usne sach sunaa, to uskaa khoon ubal uthaa।)
Register: Neutral -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
यह बात सुनकर मेरा खून उबलने लगा। Hearing this, my blood started to boil.
(yah baat sunkar meraa khoon ubalne lagaa।)
Register: Casual -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
वह अंदर से उबल रहा था पर बाहर शांत दिख रहा था। He was seething inside but looked calm outside.
(vah andar se ubal rahaa thaa par baahar shaant dikh rahaa thaa।)
Register: Neutral -- Mood: Indicative -- Aspect: Continuous -- Tense: Past -- Voice: Active
अन्याय की बात सुनकर उसका खून उबल जाता है। Whenever he hears of injustice, his blood boils.
(anyaay kii baat sunkar uskaa khoon ubal jaataa hai।)
Register: Neutral -- Mood: Indicative -- Aspect: Habitual -- Tense: Present -- Voice: Active
अगर उसे यह बात पता चलेगी, तो उसका खून उबल जाएगा। If she finds out about this, her blood will boil.
(agar use yah baat pataa chalegii, to uskaa khoon ubal jaaegaa।)
Register: Neutral -- Mood: Indicative -- Tense: Future -- Voice: Active
गुस्सा मत उबलने दो, चुपचाप बात सुनो। Don't let your anger boil over, just listen quietly.
(gussaa mat ubalne do, chupchaap baat suno।)
Register: Casual -- Mood: Imperative -- Voice: Active
काश उसका खून इतनी जल्दी न उबलता। If only his blood didn't boil so quickly.
(kaash uskaa khoon itnii jaldii n ubaltaa।)
Register: Neutral -- Mood: Counterfactual -- Aspect: Habitual -- Voice: Active
भ्रष्टाचार की खबरें पढ़कर जनता का खून उबल उठा। Reading the news of corruption, the public's blood boiled over.
(bhrashtaachaar kii khabren padhkar jantaa kaa khoon ubal uthaa।)
Register: Formal -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Active
उसका अपमान होते देख मेरा खून उबलने लगा था। Seeing him being insulted, my blood had started to boil.
(uskaa apmaan hote dekh meraa khoon ubalne lagaa thaa।)
Register: Literary -- Mood: Indicative -- Aspect: Perfective -- Tense: Past -- Voice: Passive
हो सकता है उसका खून भीतर ही भीतर उबल रहा हो। It's possible his blood is boiling quietly within.
(ho saktaa hai uskaa khoon bhiitar hii bhiitar ubal rahaa ho।)
Register: Neutral -- Mood: Subjunctive -- Aspect: Continuous -- Tense: Present -- Voice: Active
Morphology
Verb
infinitive: उबलना (ubalnaa)
infinitive oblique: उबलने (ubalne)
habitual/simple (sg.m): उबलता (ubaltaa)
habitual/simple (pl.m): उबलते (ubalte)
habitual/simple (sg.f): उबलती (ubaltii)
habitual/simple (pl.f): उबलतीं (ubaltiin)
continuous (sg.m): उबल रहा (ubal rahaa)
continuous (pl.m): उबल रहे (ubal rahe)
continuous (sg.f): उबल रही (ubal rahii)
continuous (pl.f): उबल रहीं (ubal rahiin)
perfective (sg.m): उबला (ublaa)
perfective (pl.m): उबले (uble)
perfective (sg.f): उबली (ublii)
perfective (pl.f): उबलीं (ubliin)
imperative (informal): उबल (ubal)
imperative (neutral): उबलो (ublo)
imperative (formal): उबलिए (ublie)
future (1sg.m): उबलूँगा (ubloongaa)
future (1sg.f): उबलूँगी (ubloongii)
future (1pl.m): उबलेंगे (ublenge)
future (1pl.f): उबलेंगी (ublengii)
future (2sg.m): उबलेगा (ublegaa)
future (2sg.f): उबलेगी (ublegii)
future (2pl.m): उबलोगे (ubloge)
future (2pl.f): उबलोगी (ublogii)
future (3sg.m): उबलेगा (ublegaa)
future (3sg.f): उबलेगी (ublegii)
future (3pl.m): उबलेंगे (ublenge)
future (3pl.f): उबलेंगी (ublengii)
subjunctive (1sg): उबलूँ (ubloon)
subjunctive (1pl): उबलें (ublen)
subjunctive (2sg): उबले (uble)
subjunctive (2pl): उबलो (ublo)
subjunctive (3sg): उबले (uble)
subjunctive (3pl): उबलें (ublen)