appearing in unexpected places and at unexpected moments; elusive; phantom
38th parallel (that demarcates North Korea and South Korea)
worry; care; anxiety; mental exhaustion
Metropolis (of Tokyo); (Tokyo) Metropolitan District; counter for cities and towns; capital
sender; source (of a transmission, e.g. email)
identifying signal; recognition signal; (radio) call sign
unfortunately; regrettably; sad to say
intermediate frequency; interferon; impact factor (of an academic journal); interface; index fund
reflected wave; rebounded wave; echo
agreement; concurrence; conformance; compliance
black swan (Cygnus atratus)
injury; harm; evil influence; damage
rear left; back left; left and behind
high-pitched tone; soprano
jamming; interference; cross talk
inevitable; inescapable; unavoidable
to lose one's senses; to go mad; to go off the rails; to fool around; to mess around; to lark about
to behave buggily (of software); to act up; to behave strangely
foolish question; stupid question; one's question
simultaneously striking one another (in kendo, etc.); draw; tie
to deceive; to delude; to trick; to be as ... as ... (e.g. "as bright as day", "as beautiful as a rose")
desperation; despair; self-abandonment
at full speed; (at) full tilt; headlong; impetuously; precipitately
to be collected (of clams, etc.); to be gathered (of mushrooms, herbs, etc.); to be picked (of fruit, etc.); to be able to collect; to be able to extract; to be able to get
maximization; maximisation
not bad; not half bad; pretty good
narrow; small; confined; narrow-minded; intolerant
anxiously; impatiently; worriedly; fretting; getting worked up
self-condemnation; self-reproach; self-accusation
(circular) tour; round trip; excursion
outline; summary; overview; synopsis; abstract; abridgment
personal affair; one's own affair
to take advantage of (someone's) weakness
binding (someone) hand and foot; being tied down (by rules, obligations, etc.)