noun, takes する, noun or verb acting predominately

  1. dilution, watering down.
  2. inflation (of budget, claim, etc.), padding.

Variations

Pronunciation Kanji Kana Is Common
 
水増し みずまし

Contained Kanji Breakdown

water
みず スイ み (1st, N5)
increase, add, augment
ふ.える ゾウ ま.す (5th, N3)
soil, earth, ground
ド つち は (1st, N5)
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)