

Не волнуйся, это была ложная тревога.
Don't worry, it was a false alarm.
У тебя о нём ложное представление.
You have a false impression of him.
Свидетель дал полиции ложные показания.
The witness gave false testimony to the police.
"ложный" is in the lesson "Adjectives 7" (Level 45), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,380 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.