precaution noun

ADJ. sensible, wise | adequate, proper, reasonable | necessary | elaborate | basic, simple You'll be quite safe if you observe certain basic precautions. | every We take every precaution to ensure that you have a comfortable journey. | extra, special | fire, safety, security

VERB + PRECAUTION follow, observe, take

PREP. as a ~ She had to stay in hospital overnight, just as a precaution. | ~ against a precaution against customers who try to leave without paying | ~ for Staff are expected to take reasonable precautions for their own safety. | ~ of I took the precaution of turning the water supply off first.