brief, monosyllabic (esp. BrE)
blunt, curt, short, terse
His reply was short and to the point.

sarcastic, scathing
only
A non-committal grunt was his only reply.

simple
Her reply was simple: ‘No.’

standard, usual
‘No comment’ is his standard reply to most questions.

straight
She refused to give a straight reply, deciding rather to defer the question.

evasive, non-committal
proper, satisfactory (esp. BrE)
suitable
correct
affirmative, positive
negative
early, immediate, prompt, quick
formal
individual, personal
written
polite
thoughtful
Many thanks for your thoughtful reply, we greatly appreciate it.

witty
muffled
‘I'm in here!’ came the muffled reply.

get, have, receive
Have you had a reply to your letter yet?

give sb, make, offer
He made no reply, but simply walked away.
Grace could offer no reply.

post, send, send back, type, write
I'll post the replies later on my web page.
I must write my letter in time for them to send back a reply.

elicit, produce
The report elicited a formal reply from the department.
The questionnaire produced 9 000 replies.

grunt (sth in), mumble (sth in), mutter (sth in)
‘Mmm!’ she grunted in reply.

wait for
await, expect (both formal) (in letters)
I await your reply with interest.

hear, read
She heard no reply.

come, come back
‘No!’ came the reply.
A reply came back the next day.

be forthcoming
No reply seemed to be forthcoming.

card, envelope, form, slip (BrE)
Please complete the reply card and return it to us as soon as possible.

button (= in email)
It's easy to just hit the reply button.

in reply (to sth)
What did they say in reply?
I am writing in reply to your request for information on hotels in Italy.

reply from
a reply from the minister

reply to
my reply to your query

a/the right of reply (esp. BrE)
I am grateful to you for having given me a right of reply (= the opportunity to respond) to the article in your magazine about my company.

merely, simply
He simply replied that he hadn't the faintest idea.

directly
She did not reply directly to the allegations.

personally
Well, you weren't expecting him to reply personally, were you?

at once, immediately
hastily, hurriedly, promptly, quickly
slowly
at length
She replied at length, but not to the point.

briefly, briskly, curtly, gruffly, shortly
abruptly, sharply
bluntly, flatly
‘No, you're not!’ Graham replied bluntly.

firmly
gently, politely, soothingly
lightly
seriously
quietly, softly
angrily, bitterly, crossly, indignantly, sourly
‘It was your fault!’ she replied angrily.

coldly, coolly, icily
cautiously, defensively, guardedly, hesitantly, nervously
calmly, evenly, mildly
meekly
haughtily, smugly
sternly, stiffly
brightly, cheerfully, happily
innocently
grimly, sadly
drily, sarcastically, sardonically, sweetly (ironic), tartly
absently, distractedly, vaguely
casually, nonchalantly
‘I really don't care!’ he replied nonchalantly.

matter-of-factly
‘I know!’ she replied matter-of-factly.

honestly, truthfully
confidently
evasively
sheepishly
shyly
tiredly, wearily
in kind
Calvin was insulted and replied in kind (= by insulting them back).

not bother to
She didn't even bother to reply.

to
He did not reply to my letter.

with
She replied with a smile.

a chance to reply
She quickly left the room before he had a chance to reply.

Reply is used with these nouns as the subject:
voice