源太郎: a male given name

元太: a male given name / 玄太: a male given name

預言: prophesy / 予言: prophecy, prediction

現存: existence

現存: survive, exist

言下: promptly, at one word / 芫花: lilac daphne / 弦歌: string music / 原価: cost price / 原歌: the original song (from which another is adapted) / 現下: now, the present time / 現価: present value; current price

右舷: starboard

positive thinking

(education, school subject) Short for 現代社会 (gendai shakai, “modern society”).

(idiomatic) to be infatuated (with); to be hooked (on); to lose one's heart (on); to be engrossed