noun
off season; slack period; slow season
Used in business and tourism for a period of low demand or activity, opposite of 繁忙期 (busy season).
See also: 閑散 (かんさん)
観光地は今が閑散期で、ホテルが安い。
It's the off season at the tourist spot now, so hotels are cheap.
閑散期には従業員の休暇を増やす。
We increase employee leave during the slack period.
閑散 is the adjective meaning 'deserted' or 'slack'; 閑散期 is the noun for the off-season period.
Compound of 閑散 (kansan, 'deserted, slack') and 期 (ki, 'period').