N2 — outside your level filter
Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.
長い年月を費やす
nagaitoshitsukiwotsuiyasuto spend long yearsN2expression
Example sentences1
この橋の建設には長い年月を費やすことになった。
kono hashi no kensetsu ni wa nagai toshitsuki o tsuiyasu koto ni natta.
Building this bridge ended up taking long years. neutral