Đồng nghĩa của upon one's guard

on guard alert vigilant attentive watchful observant heedful careful wary awake circumspect cautious chary tentie tenty guarded mindful cagey ready leery prepared regardful defensive expectant wide-awake open-eyed Argus-eyed on the lookout on the alert on the qui vive all ears on the watch beady-eyed wide awake on one's toes on the ball not missing a trick keeping a weather eye on things aware on your toes perceptive apprehensive prudent sharp on the job on tiptoe considerate paying attention suspicious keen conservative gingerly safe wise quick acute concentrating eagle-eyed keen-eyed hawk-eyed sharp-eyed with eyes peeled canny wakeful focused measured bright intelligent wired active keeping one's eyes peeled gimlet-eyed playing safe heads up anxious focussed fast on the draw with eyes like a hawk sensitive mistrustful doubtful distrustful discerning skeptical dubious sceptical intent suspecting alive interested thoughtful discriminating with it with weather eye open keeping a weather eye on clever percipient walking on eggs looking to protective doubting agog psyched up on alert good hands spirited calculating looking for hesitant watching one's step unsleeping watching out bright-eyed and bushy-tailed questioning switched on hip thinking twice scrupulous waiting on keeping on one's toes handling with kid gloves conscious jazzed with one's eyes open keeping one's eyes skinned hooked glued with one's eyes skinned keeping a weather eye open keeping one's eyes open deliberate unhurried concerned observative diligent rapt committed assiduous earnest deep studious reckful listening carefully heeding rigorous listening noticing reserved restrained shrewd belt-and-braces reticent with reservations judicious politic walking on egg shells tentative provident discreet hedging your bets forethoughtful precautious taking it slow understanding advertent uncertain worried shy mistrusting untrusting skittish unsure surveying clear-sighted searching contemplating considering comprehending intentive penetrating fully awake wide-eyed perky conscientious taking notice quick-witted agile astute responsive all there whip-smart clued up with your wits about you on top of vital on the stick lively sensible quick off the mark quick on the uptake clued-in moderate fastidious punctilious tactful reasonable thorough timid softly-softly meticulous reluctant particular diplomatic methodical sagacious finicky noncommittal controlled painstaking temperate accurate fussy precise strict delicate exact non-committal laborious perfectionist exacting unenterprising correct picky persnickety nice gradual unadventurous considered balanced sedulous exhaustive orderly industrious faithful dedicated full intensive solid religious prim elaborate thoroughgoing selfdisciplined pernickety loving strenuous in-depth by the book by the numbers going to great lengths gentle calm squeamish dainty patient secretive sage vague unrevealing overcareful overcautious watching evasive elusive tight-lipped playing your cards close to your chest forehanded forearmed farsighted uneasy equivocal low loath afraid nervous averse disinclined iffy inhibited constrained timorous traditional unimaginative unexciting conventional strategic unexaggerated understated judgmatic judgmatical civil detailed uncreative straight boring strait-laced narrow-minded square stay-at-home stuffy limited self-protective worldly-wise slow microscopic kid-glove stick-in-the-mud uptight demanding having foresight on lookout not rash pedantic conscionable stickling nitpicking duteous punctual levelheaded rational logical pragmatic reasoned white-glove dotting the i's ultra-careful crossing the t's nit-picky continuous mature unspectacular sober steady well thought-out well-grounded ongoing continuing plodding even tolerant modest regular happening slowly mild easy lenient disciplined peaceable abstinent slow but sure cognizant not given to excesses compromising untroubled not excessive conversant witting sentient knowledgeable ware knowing observing respectful solicitous au courant alive to on to awake to conscious of plugged in chary of in the know wary of cognizant of acquainted with tuned in regardful of recognizant of be up on know ins and outs aware of careful of watchful of know all the answers wise to hip to sensible of alert to heedful of

upon receipt upon reflection upon resolution upon termination upon that upon these terms upon it upon fulfillment upon fruition upon consideration upon conclusion upon concluding