although
UK[ɔːlˈðəʊ]US[ɔːlˈðoʊ]
conj
Used to introduce a statement that makes the main statement seem surprising or unlikely.
Etymology
The word 'although' is a contraction that emerged in Middle English from the phrase 'all though', meaning 'even if that be the case'. The 'all' component served as an intensifier, akin to 'completely' or 'entirely', while 'though' is a conjunction of Old English origin, from 'þēah', meaning 'however' or 'nevertheless'. Over time, the two words fused into a single lexical unit, with the intensifying force of 'all' softening to simply introduce a concessive clause. Thus, its modern function is to logically subordinate one fact to another, signaling a contrast that does not negate the truth of the main statement.
Analysis
This is a simplex word, a fusion of elements from Middle English. It cannot be meaningfully segmented into morphemes based on its modern English spelling.
Examples
Although it was raining, we decided to go for a walk.
She accepted the job, although the salary was lower than she had hoped.
Although he is very young, he shows remarkable maturity.