I am thinking of baby number two as I am not getting any younger

Thinking is the most unhealthy thing in the world.

I'm thinking about my future.

He thinks he is the dog’s dinner

He thinks he’s the cat’s whiskers

He thinks he is the cock of the hoop

If he thinks he’s going to sell his house easily, he’s living in a fool’s paradise

He thinks nothing of it

He thinks the world of you

He thinks no end of himself

He thinks he’s the king of the castle

He thinks he’s the cat’s meow

A third of my income will go in tax

Third time is a charm

third place

third party

third wheel

I'm in my third year.

thirdly

to be thirsty

I'm thirsty.

I am thirsty.

thirteen

thirty

thirty-two