childhood friend; friend from infancy; old playmate
to touch; to come in contact with; to receive (e.g. visitor); to attend to; to receive (news); to get; to encounter
hardly any; almost nonexistent; very little
riddle; puzzle; enigma; enigmatic; mysterious
transfer student; student changing schools
to open one's heart; to throw off reserve; to be frank
what's the matter?; what's wrong?; what happened (to) ...?; what have you done (with) ...?; where is ...?
was it?; I think it was ...; if I've got it right; (I, we) used to ...; I remember ...; it was ...
elucidation; explication; explaining; unravelling; clarification; understanding
the person in question; prominent figure; distinguished person; that person
present condition; existing state; status quo; current state
direct; immediate; personal; firsthand
guess; speculation; supposition
presumably; it seems that ...; I guess that ...; I suppose that ...; one could infer that ...
to raise; to raise up; to wake; to wake up; to cause; to bring about; to start
perfect; perfection; perfect game
establishment; settlement
I'm afraid to say; I'm sorry to say; unfortunately
clearing one's throat; cough
a few years ago; some years back
country; state; region; national government; central government; home (i.e. hometown, home country); (arch.) province (of Japan)
mapping; aligning related information, objects, etc.; mapping; mapping; cartography
implementation (e.g. of a system); materialization; materialisation; realization; realisation; actualization
propulsion; drive; promotion (of a policy, project, movement, etc.); furtherance; advancement
(United States of) America; United States; US; America (land mass); the Americas
brains (of an operation); advisor; brain trust; brain (organ)
prior research; previous work
completion; conclusion; perfect (tense, form, aspect)
foundation stone; cornerstone
to concern; to be related
not yet known; unknown; strange
execution (e.g. of a plan); carrying out; practice; action; implementation; fulfillment
last night; yesterday evening
deep; profound; dense; thick; close (relationship); intense; strong
seems to be; appears to have; supposed to be
study; diligence; discount; reduction
charge; cost; generation; age; era; a representative of; on behalf of