Fast

abstaining from food

abstain from certain foods, as for religious or medical reasons

abstain from eating

acting or moving or capable of acting or moving quickly

(used of timepieces) indicating a time ahead of or later than the correct time

at a rapid tempo

(of surfaces) conducive to rapid speeds

resistant to destruction or fading

unrestrained by convention or morality

hurried and brief

securely fixed in place

unwavering in devotion to friend or vow or cause

(of a photographic lens or emulsion) causing a shortening of exposure time

quickly or rapidly (often used as a combining form)

firmly or closely