persist

[1]	persist in/at , prevail , die hard , persevere , be persistent , run , endure , insist (on) , stand firm/fast , be steadfast/staunch , strive , toil , labour , work (hard) (at)
[2]	remain , persevere , hang in , continue , endure , hang on , hold on , carry on , keep up/on , last , linger , stay
[3]	remain , stay