same

[seym] /seɪm/
adjective
1.
identical with what is about to be or has just been mentioned:
This street is the same one we were on yesterday.
2.
being one or identical though having different names, aspects, etc.:
These are the same rules though differently worded.
3.
agreeing in kind, amount, etc.; corresponding:
two boxes of the same dimensions.
4.
unchanged in character, condition, etc.:
It's the same town after all these years.
pronoun
5.
the same person or thing.
6.
the same kind or category of thing:
You're having steak? I'll have the same, but very rare.
7.
the very person, thing, or set just mentioned:
Sighted sub sank same.
8.
the same, in the same manner; in an identical or similar way:
I see the same through your glasses as I do through mine.
Idioms
9.
all the same,
  1. notwithstanding; nevertheless:
    You don't have to go but we wish you would, all the same.
  2. of no difference; immaterial:
    It's all the same to me whether our team loses or wins.
10.
just the same,
  1. in the same manner.
  2. nevertheless:
    It was a success, but it could easily have failed, just the same.
Origin
1150-1200; Middle English; Old English same (adv.); cognate with Old Norse samr, Greek homós, Sanskrit samá
Synonyms
1–3. corresponding, interchangeable, equal. Same, similar agree in indicating a correspondence between two or more things. Same means alike in kind, degree, quality; that is, identical (with): to eat the same food every day; at the same price. Similar means like, resembling, having certain qualities in common, somewhat the same as, of nearly the same kind as: similar in appearance; Don't treat them as if they were the same when they are only similar.
Antonyms
1. different. 3. unlike.
British Dictionary definitions for all the same

same

/seɪm/
adjective the same
1.
being the very one: she is wearing the same hat she wore yesterday
2.
  1. being the one previously referred to; aforesaid
  2. (as noun): a note received about same
3.
  1. identical in kind, quantity, etc: two girls of the same age
  2. (as noun): we'd like the same, please
4.
unchanged in character or nature: his attitude is the same as ever
5.
all the same
  1. Also just the same. nevertheless; yet
  2. immaterial: it's all the same to me
adverb
6.
in an identical manner
Usage note
The use of same exemplified in if you send us your order for the materials, we will deliver same tomorrow is common in business and official English. In general English, however, this use of the word is avoided: may I borrow your book? I'll return it (not same) tomorrow
Word Origin
C12: from Old Norse samr; related to Old English adverbial phrase swā same likewise, Gothic sama, Latin similis, Greek homos same
Word Origin and History for all the same

same

adj.

perhaps abstracted from Old English swa same "the same as," but more likely from Old Norse same, samr "same," both from Proto-Germanic *sama- "same" (cf. Old Saxon, Old High German, Gothic sama, Old High German samant, German samt "together, with," Gothic samana "together," Dutch zamelen "to collect," German zusammen "together"), from PIE *samos "same," from root *sem- (1) "one," also "as one" (adv.), "together with" (cf. Sanskrit samah "even, level, similar, identical;" Avestan hama "similar, the same;" Greek hama "together with, at the same time," homos "one and the same," homios "like, resembling," homalos "even;" Latin similis "like;" Old Irish samail "likeness;" Old Church Slavonic samu "himself").

Old English had lost the pure form of the word; the modern word replaced synonymous ilk. As a pronoun from c.1300. Colloquial phrase same here as an exclamation of agreement is from 1895. Same difference curious way to say "equal," is attested from 1945.

Idioms and Phrases with all the same

all the same

.
Also, all one. Equally acceptable, making no difference. For example, If it's all the same to you I'd prefer the blue car, or Hot or cold, it's all one to me. [ Late 1700s ]
.
Also, just the same. Nevertheless, still. For example, John wants to stay another week, but I'm going home all the same, or Even if you vote against it, this measure will pass just the same. [ c. 1800 ]