幻想
Common
Noun
Irregular
Transitive
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb surutransitive verb
ilusiones
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb surutransitive verb
fantasy;illusion;vision;dream
あなたの考えはいわば幻想にすぎません。
Your idea is, as it were, a castle in the air.