fitful

adj occurring in short periods, not regularly and steadily 一阵阵的; 不规则的; 不稳定的: fitful bursts of energy 一阵阵的干劲 * a fitful night's sleep 夜间时断时续的睡眠.

fishery, fishing, fishing-boat, fishing-line, fishing-rod, fishing-tackle, fishmonger, fishwife, fishy, fissile, fission, fissionable, fissiparous, fissure, fist, fistful, fisticuffs, fistula, fit, fit into with, fitfully, fitment, fitness, fitted, fitter, fitting, fittings, five, Five Love Languages, five o'clock shadow, five pence (also five p, 5p), five-, fivepenny, fiver, fives, fix, fix in with, fix one's eyes on, fix up, fixate,