good (esp. BrE)

give sth
Give the mixture a good stir.

big, considerable, great, real
media, political (both esp. AmE)

cause, create

stir about, stir over
There was quite a stir about the book.

stir among
The discovery caused something of a stir among physicists.

quite a stir, something of a stir (esp. BrE)

thoroughly, well
carefully, gently
vigorously
gradually
all the time (BrE), constantly, continuously, frequently
Boil the mixture, stirring frequently.
Bring to the boil, stirring all the time.

occasionally
together
in
Gradually stir in the beaten egg.

into
Chop an onion and stir it into the sauce.

stir over a high, low, etc. heat
Stir over a medium heat for three minutes.

barely, hardly
The wind hardly stirred the surface of the water.

slightly
slowly
suddenly
restlessly
The students stirred restlessly in their seats.

sleepily
uneasily

stir in your sleep

deeply
It was not music to set hearts on fire or deeply stir the emotions.

up
Going back there stirred up a lot of memories for her.

Stir is used with these nouns as the subject:
breeze, memory

Stir is used with these nouns as the object:
batter, coffee, conscience, controversy, cup, debate, emotion, fire, flour, imagination, ingredient, memory, mixture, passion, pasta, pot, resentment, sauce, tea