frequent: [16] Frequent comes from Latin frequēns, which meant ‘crowded’ as well as ‘regularly repeated’ (it is not known what the origins of frequēns were, although it may be related to Latin farcīre ‘stuff’, source of English farce). The sense ‘crowded’ was carried over into English along with ‘regularly repeated’, but it had virtually died out by the end of the 18th century. The verb frequent [15] goes back to Latin frequentāre ‘visit frequently or regularly’.
frequent (adj.)
mid-15c., "ample, profuse," from Old French frequent, or directly from Latin frequentem (nominative frequens) "often, regular, repeated; in great numbers, crowded, numerous, filled, full, populous," which is of uncertain origin. Watkins says probably from PIE *bhrekw- "to cram together," and compares Greek phrassein "to fence in," Latin farcire "to cram." Meaning "common, usual" is from 1530s; that of "happening at short intervals, often recurring" is from c. 1600.
frequent (v.)
late 15c., "visit or associate with," from Old French frequenter "attend frequently; assemble, gather together," from Latin frequentare "visit regularly; do frequently, repeat; assemble in throngs," from frequentem (see frequent (adj.)). Meaning "visit often" is from 1550s. Related: Frequented; frequenter; frequenting.
实用例句
1. Bordeaux is on the main Paris-Madrid line so there are frequent trains.
波尔多位于巴黎到马德里的铁路主干线上，来往列车频繁。
来自柯林斯例句
2. There was frequent thunder and lightning, and torrential rain.
雷电交加，大雨倾盆。
来自柯林斯例句
3. The jet-setting couple made frequent appearances in the gossip columns.
这对穿梭于各国的富豪夫妇经常出现在八卦专栏。
来自柯林斯例句
4. She gives frequent performances of her work, both at home and abroad.
她经常在国内外演出自己的作品。
来自柯林斯例句
5. The engineer and his son held frequent consultations concerning technical problems.