frivolous; flippant; superficial; shallow; trifling; insincere
unfeeling; heartless; cold-hearted; cruel
closing in on (the enemy, first place, etc.); coming close to; pressing hard; pressing hard (e.g. with a question); taking to task; grilling
thin (e.g. air); diluted; sparse; lacking (e.g. empathy); deficient; insufficient (e.g. zeal)
cruel; inhumane; callous; brutal
feebleness; weakness; weak
dusk; nightfall; twilight
twilight; dusk; faint light
weak-willed; lacking a purpose; lacking will power to be patient, purposeful, or resolute
misfortune; short life; evil fate
small profits and quick returns
flake; lamella (of bone); foil (of metal); flat, thin slice of a material
frivolity; levity; shallowness; superficiality
frivolous; fickle; insincere; caprice; cold-heartedness
beauty and fortune seldom go together; the beautiful die young
small profits; low interest
infirm of purpose and lacking in decision
cruel; brutal; atrocious; merciless
crepuscular rays; sunbeams
shallow, glib and obsequious person
mental retardation; mentally retarded
small consideration (remuneration, token of gratitude)
mentally-handicapped (retarded) child (pejorative); weak-minded child
beauties die young; beauty and luck seldom go together
feeble-minded (weak-minded) person; mentally deficient person
weak-willed; a small token of appreciation
small, light and thin (of consumer products, esp. electronics)
mentally-handicapped (retarded) child; weak-minded child
light heat at the beginning of the summer
mental retardation (pejorative); mentally retarded
poor or inhospitable reception
mentally-handicapped person (pejorative); retarded person
cold-hearted; merciless; ruthless
organic thin-film solar cell; plastic solar cell
thin layer; lamella; lamina; folium
thin-layer chromatography