いっ
一
そう
層

adverb, takes genitive case の

  1. much more, still more, all the more, more than ever.

noun, takes genitive case の

  1. single layer (or story, etc.).

adverb

Archaism.
  1. rather, sooner, preferably.

Variations

Pronunciation Kanji Kana Is Common
いっ
一
そう
層
 一層 いっそう ✔

Contained Kanji Breakdown

one, one radical (no.1)
イチ　いっ　ひと- (1st, N5)
stratum, social class, layer
ソウ (6th, N2)
corpse, remains, flag radical (no. 44)
シ　かたしろ (Kentei 1)
formerly, once, before
ソ　ソウ　かつ (11th)
to divide
rice field, rice paddy
た　デン　たん (1st, N4)
day, sun, Japan
ひ　にっ　ニチ (1st, N5)