regrettable

sense ②desire ③attention

unfortunately

commemoration ②memento

(just) making sure

regret ②freedom from obstructive thoughts

belief

idea ②sense (e.g. of duty) ③resignation (to one's fate) ④observation and contemplation

thought

tenacity

deep-seated grudge

telepathic communication

absorption

memorial day

general idea

(Platonic) ideal (of how things ought to be, e.g. human rights)

critical moment

one's heart's desire

worry

willpower ②telekinesis

stubborn