укреплять
communire;
munire [4];
неусыпный
assiduus [a, um]
жизнеспособность
vitalitas [atis, f]
rugare [1];
cutem adducere [o, xi, ctum];
in rugas replicare [1];
cuti rugas inducere;
+ наморщить лоб frontem corrugare [1] / contrahere [o, xi, ctum] / astringere [o, nxi, ctum];