spine; backbone; spinal column
to let down one's hair; to undo hair
to go; to move (in a direction or towards a specific location); to proceed; to take place; to pass through; to come and go; to walk
delightful; joyous; joyful; happy; desirable; welcome
diligent study; devoting oneself to one's studies
essential part; indispensable part; unavoidable part; front and back matter (of a book, magazine, etc.)
taking a quantity (of time, people, etc.); similar to ...; dependent on ...; reliant on ...; while ...; when ...
being concentrated on one thing; devoting oneself completely to something
counter for generations; epoch
street; quarter; district; area
ladder; stairs; going to several places in succession (e.g. barhopping)
number of revolutions (i.e. as an engine speed); number of rotations; speed of revolution; speed of rotation
rapidly; vigorously; by leaps and bounds; steadily
high-speed; rapid; express; highway; freeway; expressway
to use up; to exhaust; to wear out
sideslip; skid; shifting to another post (at the same level); sideways move (at a company); sliding sideways down a slope (skiing)
stall (in flying); downturn; slowdown; slump
left-wing (politics); left wing (of a bird, aircraft, formation, etc.); left flank; left field
to cling to; to depend on; to embrace; to hug
physical weariness; sense of fatigue; washed-out feeling
seeming; pose; show; pretense; sham; mock
sense of emptiness; empty feeling; feeling of meaninglessness
bottom of the ocean; seafloor; seabed; undersea; submarine
dripping wet; soaked; drenched
to be downhearted; to look miserable
awkward; uncomfortable; embarrassing
knowing when to give up; good at letting things go; accepting failure with good grace; being a good loser
crystal; crystallization; crystallisation; fruits (of labor, union, etc.)
The Wright Brothers (Wilbur and Orville Wright)
flier; flyer; fryer; frier