slow to learn or understand; lacking intellectual acuity; "so dense he never understands anything I say to him"; "never met anyone quite so dim"; "although dull at classical learning, at mathematics he was uncommonly quick"- Thackeray; "dumb officials make some really dumb decisions"; "he was either normally stupid or being deliberately obtuse"; "worked with the slow students"
having high relative density or specific gravity; "dense as lead"
hard to pass through because of dense growth; "dense vegetation"; "thick woods"
permitting little if any light to pass through because of denseness of matter; "dense smoke"; "heavy fog"; "impenetrable gloom"
a friendly understanding between political powers
an informal alliance between countries
causing great damage or hardship; "industries hit hard by the depression"; "she was severely affected by the bank's failure"
unfortunate or hard to bear; "had hard luck"; "a tough break"
with firmness; "held hard to the railing"
resisting weight or pressure
earnestly or intently; "thought hard about it"; "stared hard at the accused"
dispassionate; "took a hard look"; "a hard bargainer";
with pain or distress or bitterness; "he took the rejection very hard"
(of speech sounds); produced with the back of the tongue raised toward or touching the velum; "Russian distinguished between hard consonants and palatalized or soft consonants"
very near or close in space or time; "it stands hard by the railroad tracks"; "they were hard on his heels"; "a strike followed hard upon the plant's opening"
(of light) transmitted directly from a pointed light source
into a solid condition; "concrete that sets
of one substance or character throughout; "solid gold"; "carved out of solid rock"
a three-dimensional shape
of the same color throughout; "solid color"
the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape
meriting respect or esteem; "an upstanding member of the community"
matter that is solid at room temperature and pressure
of a substantial character and not frivolous or superficial; "work of solid scholarship"; "based on solid facts"
of definite shape and volume; firm; neither liquid nor gaseous; "ice is water in the solid state"
entirely of one substance with no holes inside; "a solid block of wood"
financially sound; "the bank is solid and will survive this attack"
of good quality and condition; solidly built; "a solid foundation"; "several substantial timber b
a written agreement between two states or sovereigns