This paper presents a wideband printed tapered slot antenna with pattern recon- figurability. The antenna consists of four tapered slots, a reconfigurable microstrip-to-slotline transition, and four PIN diodes. Four agile endfire radiation patterns are realized with the mea- sured relative impedance bandwidth of 71.3%. The gains for the four directions are all higher than 6.4 dBi at the center frequency of 2.4 GHz. Good patterns are maintained at the four re- configurable directions in a wideband. To further enhance the gain, the zero-index-metamaterial (ZIM) units are loaded in the tapered slot. The simulation results show that extra gains of 1.4 to 1.7 dBi can be obtained within the center band from 2.2 GHz to 2.6 GHz.