What's the difference between
and
Enter two words to compare and contrast their definitions, origins, and synonyms to better understand how those words are related.

Unless vs Since - What's the difference?

unless | since |

As conjunctions the difference between unless and since

is that unless is except on a specified condition; if not while since is from the time that.

As an adverb since is

from a specified time in the past.

As a preposition since is

from (time).

unless

English

Alternative forms

* unlesse (obsolete)

Conjunction

(English Conjunctions)
  • Except on a specified condition; if not.
    • I’m leaving unless I get a pay rise (AmE: raise).
  • *
  • * 1839 , Denison Olmsted, A Compendium of Astronomy Page 95
    • Secondly, When a body is once in motion it will continue to move forever, unless something stops it. When a ball is struck on the surface of the earth, the friction of the earth and the resistance of the air soon stop its motion.

    Antonyms

    * (except on a condition) if

    Derived terms

    * precisely unless * unlesss * unless and until, until and unless

    Statistics

    *

    since

    English

    Adverb

    (-)
  • From a specified time in the past.

    • Preposition

    (English prepositions)
  • From (time).
  • * {{quote-news, year=2012, date=April 19, author=Josh Halliday, work=the Guardian
    • , title= Free speech haven or lawless cesspool – can the internet be civilised? , passage="Mujtahidd" has attracted almost 300,000 followers since the end of last year, when he began posting scandalous claims about the Saudi elite. In one tweet, Mujtahidd directly challenged Prince Abdul Aziz Bin Fahd about his political history: "Did you resign or were you forced to resign from your post as head of the diwan [office] of the council of ministers?"}}
  • * {{quote-magazine, date=2013-06-29, volume=407, issue=8842, page=29, magazine=(The Economist)
    • , title= Unspontaneous combustion , passage=Since the mid-1980s, when Indonesia first began to clear its bountiful forests on an industrial scale in favour of lucrative palm-oil plantations, “haze” has become an almost annual occurrence in South-East Asia. The cheapest way to clear logged woodland is to burn it, producing an acrid cloud of foul white smoke that, carried by the wind, can cover hundreds, or even thousands, of square miles.}}
    Antonyms
    * until

    Conjunction

    (English Conjunctions)
  • From the time that.
  • * , section=chapter 6
    • , title= Mr. Pratt's Patients , passage=He had one hand on the bounce bottle—and he'd never let go of that since he got back to the table—but he had a handkerchief in the other and was swabbing his deadlights with it.}}
  • * {{quote-magazine, year=2013, month=September-October, author=(Simson Garfinkel)
    • , magazine=(American Scientist), title= Digital Forensics , passage=Since the 1980s, computers have had increasing roles in all aspects of human life—including an involvement in criminal acts. This development has led to the rise of digital forensics, the uncovering and examination of evidence located on all things electronic with digital storage, including computers, cell phones, and networks.}}
  • Because.
  • * {{quote-book, year=1963, author=(Margery Allingham), title=(The China Governess)
    • , section=chapter 20 citation , passage=The story struck the depressingly familiar note with which true stories ring in the tried ears of experienced policemen.
  • (obsolete) When or that.
  • * (William Shakespeare)
    • Do you remember since we lay all night in the windmill in St. George's field?

    Statistics

    *

    Anagrams

    * nices, 1000 English basic words ----