tasthivás mfn. (pf. p. of √1. sthā
• nom. ○vā́n, ○thúṣī, ○vát) one who has stood, standing, remaining, continuing in, being on or in (loc.) RV. Ragh
• one who has stood still or stopped or made a pause (used as pf. tense, 'he made a pause' Hariv.), fixed, immovable, stationary (opp. to jágat) RV. MBh. &c
• occupied with, engaged in (loc.) Ragh. Rājat
• keeping on with (instr.) MBh
• persevering, constant MBh
• ready to, prepared for (dat.) ib

Sanskrit-English Dictionary, by M. Monier William