godan verb (-su), transitive verb
miss doing; fail to do
Almost always used in the negative form 欠かさない, meaning 'never fail to do' or 'do without fail'. Describes a habitual action that one always performs.
彼は毎朝ジョギングを欠かさない。
He never misses his morning jog.
祖母は毎日日記を欠かさず書
My grandmother writes in her diary every day without fail.
godan verb (-su), transitive verb
do without; go without
Used in the negative form 欠かせない to mean 'indispensable' or 'cannot do without'. The positive form is rare.
See also: 欠かせない
水は生きるのに欠かせない。
Water is indispensable for life.
この仕事には経験が欠かせない。
Experience is essential for this job.