という意味だ => This means... N4
意向形 => volitional form​ N4
気味 => -like; -looking; -looked; tending to ~ N2
がないでもない => is not entirely impossible N2
Explain
いちがいに…ない => Impossible... in general N2
Description
て仕方がない/てしょうがない => can't help but; very; extremely ~ N2
[気味「きみ」]だ => Like A, Looking like A (is happening) N2
Adjectival, Descriptions
…どうりがない => No reason... N2
Emphasize negative meaning
… とはいいながら => although, even though... N2
Invariant
じゃないが => It's not that... but... N4
How to say the beginning
いまさらながら => Still ... now N3
Time
…以外(いがい)に…ない => with the exception of; excepting ~ N4
Limit