be careful about Synonym

safety, protection, defense, safeguard, assurance, shield, guard, preservation, security measures, security system, security protocol, security service, security detail, security force, security team, security personnel, security officer, security guard, security agent, security specialist, security expert, security consultant, security advisor, security analyst, security manager, security director, security chief, security head, security leader, security supervisor, security coordinator, security monitor, security watch, security patrol, security check, security inspection, security review, security audit, security assessment, security evaluation, security examination, security survey, security scan, security test, security verification, security validation, security clearance, security authorization [x]

warning, alert, caution, notice, heads-up, notification, admonition, advice, tip-off, advance notice, premonition, foreknowledge, signal, sign, indication, hint, clue, warning sign, red flag, early warning, advance warning, prior warning, heads-up warning, pre-warning, pre-alert, pre-caution, pre-notice, pre-admonition, pre-advice, pre-tip-off, pre-notification, pre-signal, pre-sign, pre-indication, pre-hint, pre-clue, pre-warning sign, pre-red flag, early alert, early caution, early notice, early admonition, early advice, early tip-off, early notification, early signal, early sign, early indication, early hint, early clue [x]

care, prudence, wariness, circumspection, vigilance, alertness, heedfulness, attentiveness, forethought, discretion, guardedness, watchfulness, carefulness, mindfulness, deliberation, consideration [x]

caution, alert, notice, admonition, forewarning, heads-up,, alarm, signal, advisory, caveat, tip-off, red flag, wake-up call, word of warning, sign, indication, hint, threat, menace, danger signal, yellow flag, warning sign, warning signal, premonition, portent, harbinger, augury, presage, omen, foretoken, forecast, prediction, prophecy, heads-up warning, early warning, advance warning, premonitory sign, cautionary notice, danger notice, risk alert, hazard warning, safety alert, security warning, advisory notice, alert notice, danger alert, threat alert, hazard alert [x]

vigilant, watchful, attentive, observant, alert, cautious, wary, on guard, on the lookout, on one's toes, ready, prepared, aware, sharp-eyed, eagle-eyed, quick to notice, on the qui vive, on the ball, wide-awake, sleepless, wakeful, heedful, mindful, perceptive, responsive, alive, awake, conscious, sharp, keen [x]

alert, observant, vigilant, watchful, heedful, mindful, aware, conscientious, considerate, thoughtful, perceptive, responsive, focused, concentrated, diligent, careful, meticulous, scrupulous, thorough, earnest, intent, engaged, interested, devoted, dedicated, studious, assiduous, industrious, painstaking, exacting, punctilious, rigorous, particular, precise, accurate, detailed, methodical, systematic, orderly, organized, disciplined, sharp, acute, discerning, sensitive, insightful [x]

vigilant, watchful, alert, observant, attentive, on guard, on the watch, on the alert, wary, cautious, eagle-eyed, sharp-eyed, wide-awake, on one's toes, on the qui vive, on the ball, quick off the mark, ready, prepared, primed, aware, heedful, mindful, circumspect, careful, awake, sleepless, unsleeping, wakeful, on the lookout [x]

advance notice, forewarning, heads-up, early warning, preliminary notice, advance alert, prior notice, pre-warning, advance notification, early alert, advance intimation, pre-notification, advance caution, prior alert, early notice, advance heads-up, pre-alert, advance advisory, prior intimation, early notification [x]

cautious, alert, vigilant, watchful, guarded, circumspect, careful, attentive, heedful, leery, suspicious, chary, observant, prudent, mindful, distrustful, skeptical, apprehensive, on guard, on the lookout [x]

alert, forewarning, heads-up, notice, notification, caution, advance notice, advance warning, premonition, red flag, signal, tip-off, wake-up call, advisory, alarm, warning sign, heads-up alert, preliminary warning, prior warning, early alert, early notice, early signal, early indication, advance alert, advance signal, advance indication [x]

advance notice, prior notice, early warning, advance warning, prior warning, heads-up, forewarning, preliminary notice, advance alert, early alert, prior alert, advance notification, early notification, prior notification [x]

warning, caution, admonition, alert, notice, forewarning, heads-up, red flag, advisory, alarm, sign, signal, tip-off, hint, indication, reminder, wake-up call, precaution, proviso, stipulation, condition, restriction, limitation, qualification, reservation, clause, requirement, constraint, caveat emptor, cautionary note, cautionary advice, cautionary statement, cautionary warning, cautionary reminder, cautionary alert, cautionary indication, cautionary sign, cautionary signal, cautionary tip-off, cautionary hint, cautionary notice, cautionary forewarning, cautionary heads-up, cautionary red flag, cautionary advisory, cautionary alarm, cautionary wake-up call [x]

suspicious, wary, cautious, distrustful, skeptical, guarded, apprehensive, watchful, chary, doubtful, uncertain, hesitant, unsure, mistrustful, vigilant, circumspect, incredulous, questioning, suspecting, alert, mindful, heedful, attentive, observant, prudent,, uneasy, nervous, tentative, doubting, leery [x]

stop, avert, avoid, hinder, impede, preclude, prohibit, thwart deter, forestall, obstruct, block, inhibit, restrain, intercept, counteract, stave off, fend off, ward off, check, halt, curb, foil, disallow, bar, exclude, forbid, ban, restrict, suppress, constrain, hamper, stymie, arrest, hold back, keep from, nip in the bud, put a stop to, rule out, shut out, head off, cut off, cut short, put an end to, keep at bay, keep under control, keep in check, keep out, keep down [x]

be-cautious-about, be-watchful-about, be-alert-about, be-wary-of, be-on-guard-about, be-mful-of, be-attentive-to be-careful-about, be-observant-of, be-aware-of [x]