~たいしたことはない => trivial,not amounting to much N1
Emphasize the negative meaning
たいして…ない => ~is not much of~ N3
Emphasis on degree
たものではない => Impossible N2
Evaluate
たまらない => can not bear N2
Emphasis on degree
たいした ... ではない => not ... considerable; great; important; significant; a big deal N2
Emphasis on degree
めったに~ない => hardly; rarely; seldom N3
といいなあ/たらいいなあ/ばいいなあ => it would be nice if; should; I hope ~ N3
めったにない => Rarely N3
Degree. Level, Amount
くなかった => Past negative of A-い N5
Conjugate verbs
たりとも~ない => not even; not any ~ N1
たいへんな... => very; greatly; terribly; serious; difficult N4
Evaluate
たまらない => can't help but; dying to; extremely ~ N2