also: ファイヤー
noun
FIRE movement; Financial Independence, Retire Early
Refers to the lifestyle movement aiming for early retirement through extreme savings and investment.
彼はＦＩＲＥを目指して、収入の半分以上を貯金している。
He is aiming for FIRE and saves more than half of his income.
noun or participle which takes 'suru', intransitive verb
achieve FIRE; become financially independent and retire early
Used as a suru-verb to describe the act of reaching financial independence and retiring early.
彼は40歳でＦＩＲＥした。
He achieved FIRE at age 40.