frown
frown - zamračený pohled, zamračení
BrE
/'fraʊn/
AmE
/'fraʊn/

noun - the look on your face when you do not like what you see or hear, when you are angry or worried

frost
frost - jinovatka, námraza
BrE
/'frɒst/
AmE
/'frɑ:st/

noun - a white icy covering that covers things when the temperature drops below 0 (usually at night)

frost
frost - mráz, mrazík
BrE
/'frɒst/
AmE
/'frɑ:st/

noun - the weather condition with very low temperature

frighten
frighten - vystrašit, postrašit, vyděsit
BrE
/'fraɪtn/
AmE
/'fraɪtn/

verb - to make somebody terrified or scared

 
friendship - přátelství
BrE
/'frenʃɪp/
AmE
/'frenʃɪp/

noun - a friendly relationship between people

fresh
fresh - čerstvý (jídlo)
BrE
/'freʃ/
AmE
/'freʃ/

adjective - newly grown or picked

fresh
fresh - čerstvý, svěží, čilý
BrE
/'freʃ/
AmE
/'freʃ/

adjective - new, newly made, not old or tired, having much energy

 
frequency - frekvence, kmitočet
BrE
/'fri:kwənsi/
AmE
/'fri:kwənsi/

noun - a number of radio waves per second of a radio signal

 
frequency - frekvence, četnost
BrE
/'fri:kwənsi/
AmE
/'fri:kwənsi/

noun - how many times something happens or occurs in a period of time

freezer
freezer - mrazák, mraznička
BrE
/'fri:zə/
AmE
/'fri:zər/

noun - a refrigerator that keeps food frozen

freeze
freeze - zmrznout, zmrazit, mrznout, mrazit
BrE
/'fri:z/
AmE
/'fri:z/

verb - to become frozen, to become solid because of a very low temperature

 
free - volný, svobodný
BrE
/'fri:/
AmE
/'fri:/

adjective - able to do what you like, not bound, tied up, or imprisoned

frame
frame - rám, rámec, rámeček
BrE
/'freɪm/
AmE
/'freɪm/

noun - a border of something (e.g. a picture, painting) made of wood, metal, etc.

frame
frame - rám, konstrukce (nosná), kostra
BrE
/'freɪm/
AmE
/'freɪm/

noun - a strong structure around which something is built

 
fraction - zlomek
BrE
/'frækʃn/
AmE
/'frækʃn/

noun - a very small part of something, a part of a whole number