on the dot

beforehand briefly directly immediately prematurely previous promptly quick shortly soon too soon unexpectedly

betimes

a bit previous ahead of time anon bright and early early bird ere long far ahead in advance in good time in the bud in time on short notice oversoon pronto proximately

late later

efficient expeditious immediate instantaneous precise punctual quick rapid speedy swift timely

alert brisk eager instant ready smart willing

apt on the ball on the button on the nose on time unhesitating vigilant watchful wide-awake

delayed late later slow sluggish tardy

apathetic lethargic unprepared unwilling

negligent

dependable expeditious

accurate careful conscientious conscionable constant cyclic early exact fussy heedful in good time meticulous on schedule on the button on the nose painstaking particular periodic precise prompt punctilious quick ready recurrent regular reliable scrupulous seasonable steady strict timely under-the-wire

late tardy

beforehand immediate previous quick soon

advanced ahead of time anticipative anticipatory before the appointed time direct immature on short notice overearly oversoon preceding precipitant precocious preexistent premature prompt pronto punctual seasonable speedy unanticipated unexpected untimely with time to spare

late later

absolutely altogether carefully completely correctly definitely explicitly indeed literally precisely quite specifically strictly totally truly

just

bang expressly faithfully faultlessly for a fact for certain for sure in every respect methodically no mistake on the money on the nail on the nose positively right rigorously scrupulously severely sharp square the ticket truthfully unequivocally unerringly utterly veraciously wholly

doubtfully dubiously incompletely indefinite partially questionably

inaccurately inexactly

directly forthwith instantly promptly rapidly shortly soon urgently

now

PDQ anon at short notice away double-time hereupon in a New York minute in a flash in a jiffy in nothing flat instantaneously instanter like now now or never on the double on the spot pronto right now soon afterward straight away straight off summarily thereupon this instant this minute tout de suite unhesitatingly without delay without hesitation

later

eventually never

directly expeditiously hastily instantly quickly rapidly speedily swiftly

pronto

PDQ at once fast flat-out fleetly in nothing flat lickety-split like a shot now on the double on time posthaste punctually right away sharp straightaway unhesitatingly

slowly

late negligently

at once immediately instantly

bang right square

abruptly accurately exactly just on the button precisely promptly punctually smack-dab squarely suddenly

late