1. wave
In the United States, a wave means "good bye."
We're in the second week of an unrelenting heat wave.
She designated their table with a wave of the hand.
wave your hands
The LDP rode on the wave of Koizumi's popularity.
What Jansky had observed was the 14.6m wavelength radio wave from the Milky Way's core.
We're suffering from an unbearable heat wave for the second week straight.
Oh, say does that star-spangled banner yet wave o'er the land of the free and the home of the brave?
Quite a few people were killed on the cold wave that hit this area.
History is like Quantum Physics, the observer affects the event observed. Is the Kennedy assasination a particle or a wave?
I waved to/at him from the window but he didn't see me. She waves her hands about/around a lot when she's talking.
The little boy waved to his mother as the school bus pulled away from the curb.
I love the sea in winter when the waves are enormous.
You can go to Hawaii if you want to ride on large waves.
At the border the customs officer just waved us through.
2. vague
Questioned about his policies, the candidate gave only vague answers.
This meeting is a waste of time. Everybody is just talking in vague theoretical terms.
vague memories
He was still going strong at last call, as I vaguely remember.
I asked Wendy about her date, but she only gave a vague answer with no juicy details!
A good method plays a much more important role in language learning than the vague concept of innate ability.
Providing vague commands causes communication errors
The boundaries which divide Life from Death are at best shadowy and vague. Who shall say where the one ends, and where the other begins?
The vague rumor proved to be false.
The meaning of the words "full amount" was vague in the contract and was therefore interpreted differently by different parties.
„many patients suffer vague symptoms” /veɪɡ/
Even the legends were growing vague.
The definition of vague is something unclear, hazy or uncertain. An example of vague would be directions to a house that don't include street names.
People have vague understanding why I'm studying english.
Symptoms are likely to be vague and the illness will resolve quickly and have no adverse effects.