Synonyms and related words :
X-ray eye, custodianship, custody, eagle eye, gimlet eye, guard, guardedness, guardianship, invigilation, keen eye, lookout, monitoring, observance, peeled eye, penetrating eye, proctoring, prudence, qui vive, sea legs, seamanlikeness, seamanliness, seamanship, sharp eye, shipmanship, stewardship, surveillance, vigil, vigilance, wariness, watch, watch and ward, watchful eye, watchfulness, watching