clamps down (verb) batten: fasten securely
Sinonime: address, apply oneself, attend to,
bend, concentrate on, dedicate oneself to, devote oneself to, exert oneself, get serious, give, give oneself over to, keep close to, keep one's mind on, knuckle down, launch into, occupy oneself with, pitch in, plunge into, put one's hand to the plow, put one's nose to the grindstone, set to, swing into action, take the bull by the horns,
throw, turn
Antonime: be lazy, ignore,
relax