しか~ない => Only , no more than , There's only N5
Amount
てしょうがない/てしかたがない => Very A; Really A; Extremely A N2
Degree, Level, Amount
~かもしれない => Might A, maybe A, perhaps A N4
Sentence Endings
かも[知「し」]れない => Might A, maybe A, perhaps A N3
Sentence Endings
て[頂「いただ」]けないでしょうか? => Could you please A for me? N4
Secondary Verb
らしい => Seem to~ N4
Sentence Endings
だけしか => Only A can B , Nothing except N3
Not only, Not even
しかも => Not only A, but B as well N2
(Not)only, (Not) even
[際「さい」]して/に([際「さい」]し)/に[際「さい」]しての => At the time of A (which starts now).. N2
Time, Situation
かい => Really? N4
Sentence Endings
~がほしい => I want ~ N5
Asking and Telling
[関「かん」]して => About A, With relation to A N3
Considering, Concerning