appropriate; suitable; fitting; apt; proper; right
intelligence gathering; information gathering
to answer; to fire back; to retort; to redo; to do over; to try again
secret information; intelligence
activity (of a person, organization, animal, volcano, etc.); action; operation; moving picture
rearing; training; nurture; cultivation; promotion
permeation (of thought, ideology, culture, etc.); infiltration (e.g. of ideas); permeation (of a liquid, etc.); soaking; osmosis
beginning; clue; starting point
tough; hard; determined; strong-minded; strong (e.g. sunlight, alcohol); severe
to call (someone) back; to recall; to call home; to bring back (memories, etc.); to recall; to revive
without sparing time for sleep
whim; caprice; vagary; eccentricity
company; friendship; association; (romantic) involvement; dating
boo! (sound used to scare someone); ugh (dissatisfaction, aggravation); ulp (consternation)
to say; to spatter; to prate; to prattle; to babble
a long time (since the last time); first in a long time; it's been a long time; long time no see
not writing or contacting for a while; neglecting (failing) to write (call, visit, etc.); long silence
(private) secretary; treasured book; secret book
surprise attack; surprise visit; catching a person off guard
softly; mildly; gently; politely
with a loud, shrill laugh; with a cackle; (laughing) wildly
diagnosis; medical examination
pure heart; naivete; innocence
to tease; to make fun of; to poke fun at; to make a crack about; to chaff; to kid
quickly (esp. actions); suddenly (esp. wind, rain, etc.)
thick; deep; kind; cordial; abundant
official; formal; formula (e.g. mathematical); official (social media) account (of a company, organization, etc.)
document; writing; letter; document addressed to someone
just (now); quite (near); unintentionally; subconsciously
to come along; to come around; to turn up; to arrive at the present; to get where one is; to have been doing something (for a period of time)
to go by; to cross; to pass by; to flash across
expression; look; countenance; face
contents of a document (esp. of a letter)