to be jealous; to be envious
may; might; perhaps; may be; possibly
possible; potential; practicable; feasible
to advance; to go forward; to precede; to go ahead (of); to make progress; to improve; to deepen
study; research; investigation
where; which; anyway; anyhow; sooner or later; eventually
in order to (e.g. meet goal); so that; take care (so as); hoping or wishing for something
stimulus; impetus; incentive; encouragement; motivation; provocation
to read and understand; to take in; to sense from external cues; to read (someone's) mind; to read (calibration, tape, etc.); to scan (bar code)
autograph; signature; sign; signal; indication
anger; rage; fury; wrath; indignation
to discover; to find (e.g. an error in a book); to locate; to find (e.g. something missing); to be used to seeing; to be familiar with
knack; skill; bone; skeleton; cremated remains (esp. the bones); ashes
vigilance; caution; alertness; precaution; being on guard
nicely; properly; frequently; often; I'm glad that you ...; thank you for ...
to creep in; to steal in; to sneak in
nest; rookery; den; haunt; (spider's) web
state; condition; situation; appearance; circumstances
record; minutes; record (e.g. in sports); results; to record; to document
perhaps; likely; probably; I dare say
warm; mild; considerate; kind; warm (of a colour); mellow
harvest; crop; ingathering; fruits (of one's labors); gain; result
to be solved; to be resolved; to loosen; to come untied; to be removed (of restrictions); to be lifted (e.g. a ban)
drumming (noise); beating; rapidly; quickly; continuously; one after the other
riddle; puzzle; enigma; enigmatic; mysterious
from now on; after this; in the future; from here; from this point
to wave; to shake; to sprinkle; to throw (dice); to cast (actor); to allocate (work); to turn down (somebody)
what?!; what did you say?!; why?; what for?; anyone; anything
study; scholarship; learning; discipline; branch of learning; (a) science
important; significant; precious; valuable; careful
very; awfully; exceedingly; (not) at all; by no means; simply (cannot)
the future (usually distant); future tense; the world to come
to think (about, of); to think over; to consider; to bear in mind; to think (that); to believe; to intend (to do)
to be aware of; to know; to notice; to feel; to understand; to comprehend; to remember
where; what place; how much (long, far); what extent
teacher; instructor; sensei; title or form of address for a teacher, master, doctor, lawyer, etc.; intimate or teasing form of address; (arch.) one's elder
lesson; class work; teaching; instruction
what; how many; many; a lot of; several; a few
to be able (to); to be possible (to)
mutually; with each other; reciprocally; together; both