allein /aˈlai‿n/
A
adjective
1 (ohne andere, für sich) alone; on one's own, on its own; by oneself, by itself;
sie waren allein im Zimmer they were alone in the room;
ganz allein all on one's/its own;
jmdn. allein lassen leave sb alone or on his/her own;
allein über den Atlantik segeln sail alone across the Atlantic
2 (einsam) alone
B
adverb
(ohne Hilfe) by oneself, by itself; on one's own, on its own;
sie kann allein schwimmen she can swim by herself or on her own;
etw. allein machen (herstellen) make sth oneself; (tun) do sth oneself;
von allein by oneself/itself;
das müsstet ihr von allein wissen you shouldn't have to be told [that]
C
adverb
1 (ausschließlich) alone;
er allein trägt die Verantwortung he alone bears responsibility; it is his responsibility alone;
sie denkt allein an sich she thinks solely or only of herself;
allein durch den Glauben by faith alone; only by faith;
nicht allein …, sondern auch … not only …, but also …
2 (von allem anderen abgesehen)
[schon] allein der Gedanke/[schon] der Gedanke allein the mere or very thought [of it];
allein die Nebenkosten the additional costs alone
D
conjunction
however; but;
allein, es war zu spät however, it was too late; it was too late, however