inconsistent
US /ˌɪn.kənˈsɪs.tənt/
UK /ˌɪn.kənˈsɪs.tənt/

1.
不一致的, 不穩定的
not staying the same throughout, or not in agreement with something
:
•
His statements were inconsistent with the evidence.
他的陳述與證據不符。
•
The quality of the product has been inconsistent.
產品品質一直不穩定。