incessantin‧ces‧sant /ɪnˈsesənt/ adjective [usually before noun] 
Word Origin
The child’s incessant talking started to irritate her. incessant rain—incessantly adverb: They quarreled incessantly.
Word OriginWORD ORIGINincessant
ExamplesOrigin:
1400-1500 Late Latin, Latin cessare ‘to delay’EXAMPLES FROM OTHER DICTIONARIES
Thesaurus- Julia became irritated by the child's incessant talking.
- Outside the window is the incessant noise of cars and buses.
- She gave two- or three-word answers to reporters' incessant questions.
- The incessant buzz of conversation filled the student cafeteria.
- The incessant buzzing of helicopters filled the evening sky.
- The incessant rain has meant that many matches had to be cancelled.
- But nothing could drown out the other incessant thrumming.
- Eccentrics talk to themselves; some of us address incessant memos to ourselves; many people write in private journals.
- Far more wearing for the community at large was the incessant drumming which emanated from the jail-house.
- Quite apart from the borders' incessant claims on the tsar's attention, they tied down his troops.
- The deep tones of the cannon marked time to the incessant roll of musketry..
- The governor handled the violent uncertainties of his country, the incessant bloodletting, a lot better than I did.
- The streets and bars were deserted, and for once the incessant noise and bustle had abated.
- Thunder exploded, roll after roll after roll, so that there seemed to be no gap between but only an incessant bombardment.
Longman Language Activatorhappening all the time, without stopping or changing► always
continuing without stopping SYN constant: all the time without changing: · The temperature of the lake is always below fifty-five degrees.· Ron is always in a bad mood in the morning.· Our upstairs neighbor always keeps to himself. We hardly know him at all.
► all the time · Gabrielle talks about her kids all the time.· The couple upstairs argue all the time.· I don't have to wear my glasses all the time - just for reading.
► the whole time all the time while something is happening - use this about something annoying or surprising: · He talked about himself the whole time I was with him.· We realized that Duncan had been standing there the whole time.
► at all times all the time - used especially in official notices and rules: · Carry your passport with you at all times.· Keep your hotel door locked at all times.
► constantly all the time, continuously: · Shelly constantly tries to impress her boss.· She constantly criticizes my cooking.
► permanently all the time and never likely to change: · Hardy was permanently banned from professional figure skating.· It's such a dangerous neighborhood that the windows of some stores are permanently barricaded.
► perennial: perennial problem/concern/struggle etc one which people are concerned with all the time, and have been concerned with for a long time: · High unemployment rates are a perennial problem in several European countries.· Severe and unpredictable weather is a perennial danger for mountain climbers.
► unfailing: unfailing support/loyalty/good humour etc support, loyalty etc that you can depend on because it never changes or grows weaker even when there is trouble or difficulty: · I'd like to thank you all for your unfailing love and support.· Peter's unfailing humour made him popular with his fellow workers.
► incessant happening or done all the time without stopping, in a way that is very annoying: · Julia became irritated by the child's incessant talking.· The incessant buzz of conversation filled the student cafeteria.
► day in, day out every day for a long time - use this especially to say that someone keeps doing something difficult, tiring, or boring for a long time, or that something keeps happening for a long time: · Henry did the same thing, day in and day out, for over thirty years.· Investigators are working day in, day out to determine the cause of the crash.
► morning, noon, and night spoken said in order to emphasize that something happens all the time, especially something that is annoying: · It seems like we've been going to meetings morning, noon, and night lately.
► 24/7 informal all the time without stopping: · We're here to help you 24/7.· The deadline is next week, so everyone in the office is working 24/7.
when something unpleasant continues for a long time► continual use this about something annoying or unpleasant that continues for a long time without stopping: · The deadline was getting closer and we were under continual pressure to reach our targets.· The exhaustion felt by new parents comes from the continual disturbance of their sleep patterns.
► constant use this about an unpleasant or frightening situation that continues for a long time without stopping: · She has learned to put up with the constant roar of trucks and cars whizzing by.· People under the regime lived in constant fear.· Lehman is in constant pain, and suffers from a severe form of arthritis.
► perpetual use this about an unpleasant or upsetting situation that is always there and does not change: · For many working mothers, balancing the demands of children and job is a perpetual strain.· Those who remain in the city are in perpetual danger of being hit by bullets and shells.
► incessant something unpleasant and annoying, especially a noise, that is incessant continues over a long period of time and never stops: · Outside the window is the incessant noise of cars and buses.· She gave two- or three-word answers to reporters' incessant questions .· The incessant rain has meant that many matches had to be cancelled.
► nagging: nagging doubt/fear/worry/suspicion etc a doubt etc that is probably unnecessary but that stays with you all the time and does not go away: · She had a nagging worry that she hadn't done enough to prepare.· I have a nagging feeling that I forgot to do something.· There are still some nagging doubts about the future of the company, though for now it is doing well.
► endless/unending/never-ending use this about something unpleasant, boring, or tiring that continues for so long that you think it will never end or change: · How can I stop my children's endless quarrelling?· The wet winter days seemed at times unending.· His immune system failed, and he caught a never-ending series of viruses and infections.
► persistent a persistent problem or illness is not very serious but it continues to exist even though you try to get rid of it: · He has a persistent cough because of his smoking.· The country has suffered from persistent economic problems.
► unrelenting formal an unpleasant situation or feeling that is unrelenting continues for a long time without stopping: · The unrelenting pressures of the job started to affect her health.· The relief efforts have been hindered by unrelenting bad weather.· The unrelenting air attack on the country continued.
The child’s incessant talking started to irritate her. incessant rain—incessantly adverb: They quarreled incessantly.