fast-changing
adjectiveUK /ˌfɑːst ˈtʃeɪndʒɪŋ/
US /ˌfæst ˈtʃeɪndʒɪŋ/
Changing very quickly.
The weather in the mountains is fast-changing, so bring a jacket.
RELATED WORDS
OTHER MEANINGS
2. Moving or developing at a high speed.
She works in the fast-changing world of technology.
3. Not staying the same for long.
Kids have fast-changing interests and hobbies.
4. Changing often and unpredictably.
The fast-changing market makes it hard to plan ahead.