To discriminate the frequent recurrence of weft insertion defect of a specific weft in a multicolor weft-inserting loom.

This weft feeler of a multicolor weft-inserting loom has a counter 22 for counting weft insertion defect signals at every kind of yarns based on weft selection signals and for figuring the recurrence number of times of weft insertion defects at every kind of yarns within a preferred monitoring term, an allowable frequency-setting means 25 for weft insertion defects at every kind of yarns, a comparator 28 for comparing the recurrence number of times of weft insertion defects from the counter 22 with the allowable frequency in weft insertion defects from the means 25 and for outputting an alarm signal when the recurrence number of times of weft insertion defects exceeds the allowable frequency in weft insertion defects and a monitoring term-setting means 14 for setting the preferred monitoring term for the counter 22.