יַצִיב

fast(adjective)

(of a dye) fixed; that will not come out of a fabric when it is washed.

מָהִיר

fast(adjective)

quick-moving

a fast car.

לְהַצמִיד

fast(adjective)

firm; fixed

She made her end of the rope fast to a tree.

מָהִיר

fast(adjective)

quick

a fast worker.

מְמַהֵר

fast(adjective)

(of a clock, watch etc) showing a time in advance of the correct time

My watch is five minutes fast.

מַהֵר

fast(adverb)

quickly

She speaks so fast I can't understand her.

צוֹם

fast(noun)

a time or act of fasting

She has just finished two days' fast.

לַצוּם

fast(verb)

to go without food, especially for religious or medical reasons

Muslims fast during the festival of Ramadan.