keep ...-ing; have been ...-ing; leaving (something) on; leaving (something) still in use
theory; reason; logic; (unreasonable) argument; strained logic; excuse
to open (e.g. doors); to open (e.g. business, etc.); to be empty; to be vacant; to be available; to be open (e.g. neckline, etc.); to have been opened (of one's eyes, mouth, etc.)
to shiver; to shake; to quake; to tremble; to quaver; to quiver
to throw open; to leave open
after having come this far; now that we've come this far
to put to use; to make good use of; to exploit
have a good day; take care; see you
awfully; frightfully; desperately; violently; unduly; extremely
after this; from now on; hereafter; thereafter; since (then); after
single word; a few words; brief comment
to let out; to utter; to issue; to send; to leave; to depart
stirring; slight movement
to break; to snap; to be injured; to wear out; to be worn out; to break; to burst
to set foot into; to enter; to step inside; to cross the threshold
at one's feet; underfoot; gait; pace; most recent; current
feel (i.e. tactile sensation); touch; feeling; sensation; texture (e.g. food, cloth)
hard; solid; stiff; tight; strong; firm (not viscous or easily moved); safe
easy; likely to ...; have a tendency to ...; easy to ...
field of vision; visibility; view; visual field; (one's) ken
behind; in the rear; in back
to lose sight of (one's companions); to stray from; to miss (one's chance to ...)
gentle; mild; meek; tender
to be enlivened; to be exhilarated
to be lost (e.g. luggage); to be missing; to be used up; to be run out; to disappear (e.g. pain); to be lost (e.g. a dream, confidence)
suddenly; abruptly; unexpectedly
to straighten up one's back (e.g. stand up straight, sit up straight); to hold one's head high
serious; important; significant; grave; weighty
to connect; to link together; to tie; to fasten; to maintain; to preserve
corridor; gallery; hallway; cloister (i.e. covered walk typically circling a building or garden, esp. in a palace or place of worship)
be considered; be deemed; be thought to be
raw; uncooked; natural; as it is; unprotected (sex); live (i.e. not recorded); inexperienced
boundary; border; limit; bounds; frontier
to sway to and fro; to drift about; to flutter; to be fickle; to be irresolute; to vacillate
cavity; hollow; void; hollow (voice, smile, etc.); blank (eyes, look, etc.); vacant (expression, stare, etc.)
underground spring; Hades; hell; underworld
interval; space; valley; gorge; loophole (in a wall); crenel
if you think about it; come to think of it