Overt means open and done in plain sight. An overt demand for an increase in your allowance probably won't work; instead, try praising your parents' generosity and dropping hints about how high prices are these days.

If you speak French, remember that overt is the same as the French ouvert "open." If you don't speak French, give up all hope of ever learning this word. Just kidding — forgive the overt attempt at humor. English speakers, here's your trick for remembering the difference between overt and covert: overt = "open"; covert = "covered."

Definitions of overt

adj open and observable; not secret or hidden

“an overt lie”
overt hostility”
overt intelligence gathering”
explicit, expressed
precisely and clearly expressed or readily observable; leaving nothing to implication
bald, barefaced
with no effort to conceal
naked, raw
devoid of elaboration or diminution or concealment; bare and pure
plain to see
obvious to the eye
not private; open to or concerning the people as a whole
not concealed or hidden
secret or hidden; not openly practiced or engaged in or shown or avowed
implicit, inexplicit
implied though not directly expressed; inherent in the nature of something
backstair, backstairs, furtive
secret and sly or sordid
(of intelligence operations) deliberately misleading
clandestine, cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, secret, surreptitious, undercover, underground
conducted with or marked by hidden aims or methods
indulging only covertly
collusive, conniving
acting together in secret toward a fraudulent or illegal end
cloaked, disguised, masked
having its true character concealed with the intent of misleading
communicated covertly
behind-the-scenes, sub-rosa, under-the-table
designed and carried out secretly or confidentially
subterranean, subterraneous, ulterior
lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)
under wraps
kept secret
undisclosed, unrevealed
not made known
hidden on any grounds for any motive
invisible, unseeable
impossible or nearly impossible to see; imperceptible by the eye
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