N2 — outside your level filter
Modifies the end of the sentence directly and takes no だ／です, so there are no forms to conjugate.
つくづく
tsukuzukuthoroughly, to the core (a feeling that sinks in deeply)N2adverb
Example sentences2
一人で暮らしてみて、家族のありがたさをつくづく感じた。
hitori de kurashite mite, kazoku no arigatasa o tsukuzuku kanjita.
Living alone made me feel keenly how much I owe my family. neutral
自分はつくづく運がないなと思う。
jibun wa tsukuzuku un ga nai na to omou.
I really think I'm just thoroughly unlucky. casual