Definition of since in English:

since

preposition, conjunction, & adverb

  • 1In the intervening period between (the time mentioned) and the time under consideration, typically the present.

    as preposition ‘she has suffered from depression since she was sixteen’
    ‘the worst property slump since the war’
    ‘I've felt better since I've been here’
    as adverb ‘she ran away on Friday and we haven't seen her since’
    • ‘That was a few months ago and I've put a lot of work in since then so it should be stronger.’
    • ‘All the things that have happened to me since that depressing period of my life!’
    • ‘I want to get back in the ring because it feels such a long time since the last fight.’
    • ‘The property had been empty since last July but a couple of weeks ago his daughter moved in.’
    • ‘Workers say since then managers have been asking them to go home during quieter periods.’
    • ‘So I put on makeup for the first time since that fight at lunch that started all this.’
    • ‘It meant that no party had overall control for the first time since the Second World War.’
    • ‘It is hard to believe that a year has passed since then and it is a significant milestone in her fight for life.’
    • ‘Well, maybe not entirely, but life has been in a slump since I tied the knot this summer.’
    • ‘It was the British who suffered the worst single incident since the end of the war.’
    • ‘For that reason clarinets have been built since their early days in different keys.’
    • ‘It is now one year since Douglas died and for some reason it still feels like there's a hole in the world.’
    • ‘It is the first rise since property prices began spiralling in York in the last two to three years.’
    • ‘It could quite literally be the biggest thing to hit the resort since the war itself.’
    • ‘I booked him for an exhibition immediately and he has been here regularly since then.’
    • ‘They are on a mission, a task that they have been training for since they entered the Army.’
    • ‘It has been some time since anyone had to fight their way into a London saleroom.’
    • ‘Things may have picked up for Celtic since then but I see no reason to change my advice.’
    • ‘Too much has happened in the period since.’
    • ‘My focus since then has been on removing this sort of conditioning from everyone.’
    because, since, seeing that, seeing as, considering that, on account of the fact that, in view of the fact that, owing to the fact that
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  • 2conjunction For the reason that; because.

    ‘delegates were delighted, since better protection of rhino reserves will help protect other rare species’
    • ‘They certainly knew that their task was hard since two previous attempts had failed.’
    • ‘I was brought in the same room as Raine, since the doctors had mentioned this was the only room left.’
    • ‘Many more elsewhere are struggling since visitors found a reason to stay at home.’
    • ‘She was right to ditch the passage since it would have jarred with the spirit of reasoned debate.’
    since, as, for the reason that, in view of the fact that, owing to the fact that, seeing as, seeing that
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  • 3adverb Ago.

    ‘the settlement had vanished long since’
    • ‘Her cards were face up in front of her and she had long since lost count of whose turn it was.’
    • ‘Many features shown are long since gone, but the maps aim to ensure they are not forgotten.’
    • ‘They have long since ceased to be amazed at the number of shopping trolleys they find.’
    • ‘The club's long since gone but the memories of those starry nights have never faded.’
    • ‘The romance has long since expired like the first red rose he bought you to proclaim his love.’
    • ‘Mitchell had matured and quieted much by then and had long since left her flapper days behind.’
    • ‘Wales had long since been conquered, but it was still very much alive as a country.’
    • ‘Presumably it's a joke, but taken to such an extent that it's long since ceased to be one.’
    • ‘Practice has long since taken its leave of policy, and speaks to it about once a year, on a bad line.’
    • ‘Other cabins and superstructure have long since rotted and crumpled to the seabed.’
    • ‘I am sure there would have been mad ones then, too, but they are long since forgotten.’
    • ‘Tunisia put the ball in Spain's net, but the whistle had long since gone for offside.’
    • ‘That fabric has long since been sundered and social anarchy has been the consequence.’
    • ‘The government has long since given up trying to reduce the propensity to commit crime.’
    • ‘My father who started the business has long since given up trying to make me like him.’
    • ‘The sun had long since risen, not that you could tell it from the ominous clouds outside.’
    • ‘The banks will reclaim the funds from the retailer, but the goods have long since gone.’
    • ‘The sun had long since faded by this time and the sky was growing darker by the minute.’
    • ‘The guards behind her had long since left and Ashley stared at the entrance with longing.’
    • ‘The lights had long since gone out, leaving the room darkened enough that he could hide.’
    in the past, before the present, before, earlier, back, in time gone by, since, formerly, previously
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Origin

Late Middle English: contraction of obsolete sithence, or from dialect sin (both from dialect sithen ‘thereupon, afterwards, ever since’).

Pronunciation

since

/sɪns/