A-OK

All systems go

A-OK means completely fine or in perfect working order, coined during NASA's Mercury missions in the early 1960s.

The "A" supposedly emphasized "okay" for clearer radio transmission.

It conveys cheerful reassurance that all systems are functioning: Mission control confirmed everything was A-OK.

Also appears as a-ok or A-okay.

satisfactory

fine

Acceptable in quality

acceptableMeeting minimum standards
adequateBarely meeting standards
goodSatisfactory in quality

decent · passable · sufficient · satisfactory · shipshape · hunky-dory · copacetic · peachy · dandy · swell

affirmation

yes

Opposite of no

agreedShared the same view
confirmedEstablished as accurate
acknowledgedAccepted as true

understood · correct · roger · affirmative · check · absolutely · certainly · definitely · indeed · right

approval

approved

Officially accepted or permitted

endorsedOfficially approved or supported
sanctionedFormally approved or penalized
authorizedGiven official permission

cleared · certified · validated · accepted · permitted · ratified · blessed · okayed · passed · accredited

reassurance

relax

Become less tense

calmFree from agitation
safeFree from peril
secureProtected from harm

settled · handled · sorted · covered · smooth · steady · stable · comfortable · at-ease

Categories

spaceflightlaunch, astronaut, spacecraft, liftoff, orbit
saying yesyes, nodding, agreeing, sure, accepting
Ways to Say "Finefine, good, all right, cool, great

Opposites

quality/condition

Extremely poor or distressing

awful · lousy · rotten · atrocious · poor

status/acceptability

no-go · problematic · unacceptable · unsatisfactory · amiss

status/functionality

A-OKproblematic

Causing difficulty or concern

defective · faulty · broken · malfunctioning · not okay

Family

Familiarity: Top 200,000
Profile: Known to kids · Mostly American · Timeless · Abstract · Positive · Everyday, not technical · Rated G