state-of-the-art; cutting-edge
trial product; prototype model
always; all the time; never; usual; regular
old clothes; secondhand clothing
coworker; co-worker; colleague; associate
qualitative difference; disparity; gap
to be satisfied (with an explanation, apology, etc.); to be happy
thought; imagination; mind; desire; wish; love
confidentiality; nondisclosure
meaning; significance; sense
simple; artless; naive; unsophisticated
to be vague; to speak ambiguously; to be evasive; to not commit oneself
instead of; in place of; as a substitute for; in exchange for; in return for; to make up for
to hold in one's arms (e.g. a baby); to embrace; to have sex with; to make love to; to sit on (eggs); to brood
deepest part; deepest portion; depths (of the ocean etc.); innermost
unidentifiable; unidentified
being filled with; being full of; permeation
to make progress; to develop; to evolve (method, style, etc.)
common sense; good sense; common knowledge; general knowledge; common practice; accepted practice
sentence-ending particle expressing doubt
no problem; all right; not an issue; unobjectionable
breaking through; breakthrough; surmounting; overcoming; exceeding; passing
to be in a hurry; to be impatient; to be anxious (to do); to get a fright; to panic; to get flustered
fast-talking; rapid talking
(one) matter; (one) item; (one) case
not yet known; unknown; strange
to declare; to assert; to state definitively; to finish saying; to say it all; to finish one's sentence
strictly; severely; rigidly
to be careful; to be discreet; to do in moderation; to refrain (from overdoing); to be purified; to be chaste
to tighten; to stiffen; to brace; to strain
for convenience; as a matter of convenience
seven; seven years of age; four o'clock (old time system)
class; level; stratum; layer; hierarchy
classification; categorization; sorting
reaching; attaining; arrival
at present; currently; so far; for now; for the time being
stairs; stairway; staircase
form; shape; state; condition; letter; correspondence
bottom layer; undermost layer; lowest (societal) class; bottom (economic) stratum; lowest caste
blank space (in documents); vacuum; blank; void