population density

densely populated

(verb) Keep something as a secret

to chat in discreet

encrypt

cryptocurrency

tight-lipped, someone who doesn't like talking or gossiping; good in keeping secret

inform on

informant

meticulous

Hami melon

tight

classified national information

fill in tightly

inseparable

secret order

Federated States of Micronesia

(noun) (of relationship) Bond of / with

closely related

dense thickets

do faster; work harder / faster

secret room

densely

closely packed

noun; secretive conversation

packed closely together

be as silent as a grave / conservative

it is used to describe pretentious women who dress modestly but have a passion and open mindset, and an interest in sex

ziplock bag

seal