a.

1. 不正確的，謬誤的；不真實的
   What you're saying is false.

   你所說的是假的。

   I don't want to give you a false impression.

   我不想給你一個不真實的印象。

2. 不誠實的；虛妄的
   He was accused of giving false witness.

   他被指控作偽證。

3. 不忠實的，無信義的[（+to）]
   Better an open enemy than a false friend.

   明槍易躲，暗箭難防。

4. 假的；偽造的；人造的
   She wore false hair to the dance.

   她戴著假髮去參加舞會。

5. 全無根據的；與實際不符合的

adj.

1. not according with truth or fact.
   ▸invalid or illegal:

   false imprisonment.
2. deliberately intended to deceive.
   ▸artificial.
3. not actually so; illusory.
   ▸used in names of plants, animals, and gems that superficially resemble the thing properly so called, e.g. false scorpion.
4. disloyal.