just have a guess

I guessed as much — das habe ich mir schon gedacht

I guess we'll have to — wir müssen wohl

you've guessed right/wrong — deine Vermutung ist richtig/falsch

at a guess — schätzungsweise

my guess is [that]... — ich schätze, dass...

I'll give you three guesses — dreimal darfst du raten

50 people, at a guess — schätzungsweise 50 Leute

to keep sb guessing — jdn im Ungewissen lassen

he's only guessing when he says they'll come — das ist eine reine Vermutung von ihm, dass sie kommen

you'll never guess! — das wirst du nie erraten!

you'll never guess what! — darauf kommst du nie!

to guess at sth — etw raten

he's right, I guess — er hat wohl recht

I guessed as much — das habe ich mir schon gedacht

to guess sb to be 20 years old/sth to be 10 lbs —

you'll never guess who/what... — das errätst du nie, wer/was...

can you guess his weight? — schätz mal, wieviel er wiegt

you'd never guess that... — man würde nie vermuten, dass...

I guessed as much — das habe ich mir schon gedacht

I guess we'll have to — wir müssen wohl

I'm just guessing — das ist nur eine Schätzung/eine Vermutung

you've guessed right/wrong — deine Vermutung ist richtig/falsch

you'll never guess! — darauf kommst du nie!

at a guess — schätzungsweise

my guess is [that]... — ich schätze, dass...

have a guess! — a ver si adivinas!

you're allowed three guesses — tienes tres oportunidades de adivinar(lo)

it was just a wild guess — fue lo primero que (se) me vino a la cabeza

your guess is as good as mine — quién sabe, vete tú a saber

guess who! — adivina quién soy, ¿a que no sabes quién soy?

guess what! — ¿sabes qué?

you'll never guess what he said — no te puedes imaginar lo que dijo

I guessed that he weighed about 150 pounds — calculé que pesaría unas 150 libras

I guess so — supongo (que sí), eso creo

to guess wrong — equivocarse*

to guess AT something: we can only guess at her motives — sólo podemos hacer conjeturas sobre cuáles fueron sus motivos

to make/have a guess — adivinar

have a guess, I'll give you three guesses — a ver si lo adivinas

at a (rough) guess — a ojo

my guess is that... — yo creo que...

it's anybody's guess — ¿quién sabe?

your guess is as good as mine! — ¡vete a saber!

guess what! — ¡a que no lo adivinas!

guess who! — ¡a ver si adivinas quién soy!

I guessed as much — me lo suponía

you've guessed it! — ¡has acertado!

I never guessed it was so big — nunca supuse que fuera tan grande

I guessed him to be about 20 — le eché unos 20 años

I guess you're right — supongo que tienes razón

I guess we'll buy it — me imagino que lo compraremos

you'll never guess — no lo adivinarás nunca

he's just guessing — no hace más que especular

to keep sb guessing — mantener a algn a la expectativa

to guess at sth — intentar adivinar algo

all that time we never guessed — en todo ese tiempo no lo sospechábamos

I guess so — creo que sí

he's happy, I guess — supongo que está contento

have a guess! — a ver si adivinas!

you're allowed three guesses — tienes tres oportunidades de adivinar(lo)

it was just a wild guess — fue lo primero que (se) me vino a la cabeza

your guess is as good as mine — quién sabe, vete tú a saber

guess who! — adivina quién soy, ¿a que no sabes quién soy?

guess what! — ¿sabes qué?

you'll never guess what he said — no te puedes imaginar lo que dijo

I guessed that he weighed about 150 pounds — calculé que pesaría unas 150 libras

I guess so — supongo (que sí), eso creo

to guess wrong — equivocarse*

to guess AT something: we can only guess at her motives — sólo podemos hacer conjeturas sobre cuáles fueron sus motivos

have a guess! — prova a indovinare!

at a (rough) guess — a occhio e croce

my guess is that... — suppongo che...

it's anybody's guess — Dio solo (lo) sa

your guess is as good as mine — ne so quanto te

it's just a guess — è solo una supposizione

can you guess what it is? — sai cos'è?

I guessed as much — me lo immaginavo

I guess so — direi di sì, suppongo di sì

I guess you're right — forse hai ragione

to guess at sth — provare a indovinare qc

to guess correctly — azzeccarci

she's just guessing — sta tirando a indovinare

he's happy, I guess — è felice, immagino

to guess wildly — говорить наугад / наобум

to guess at — пытаться отгадать, определить наугад

We may only guess when it all began. — Можно только догадываться, когда всё это началось.

Guess where the money is. — Отгадай, где деньги.

You could guess by the look of his face. — У него все на лице было написано.

to guess a riddle — отгадать загадку

guess the answer — ответить правильно

to guess right — отгадать

to guess wrong — не отгадать

to guess shrewdly — проницательно / точно отгадывать

He is Russian as you might have guessed from his name. — Он русский, как можно было догадаться по имени.

I guess that he'll be late. — Думаю, что он опоздает.

I guessed you not to be here that late. — Я не ожидал застать тебя в столь поздний час.

I guess I've just the right amount of brains for that. — Уверен, что мозгов мне на это хватит.

random / wild guess — произвольное предположение; высказанное наобум предположение

shrewd guess — точная догадка

after / by / to my guess — насколько я полагаю

my guess is, it is my guess — я почти не сомневаюсь

without guess — несомненно

to hazard / make / give a guess — предполагать, высказывать предположение

You have three guesses! — Отгадай с трёх раз!

It is only a guess that she will be appointed. — Это только предположение, что её назначат.

You have another guess coming! — А вот и нет, не угадал!

Your guess is as good as mine. — Я знаю не больше вашего.

by / at / in / up / upon guess — наугад, приблизительно прикинув

the guess of the hand — прикидка на вес

I'll give you three guesses — możesz zgadywać trzy razy

to take/have a guess — zgadywać

my guess is that … — sądzę or przypuszczam, że…

I guess… (esp US) — sądzę or przypuszczam, że …

I guess so — chyba tak

I guess you're right — chyba masz rację

to keep sb guessing — trzymać kogoś w niewiedzy

you'll never guess what has happened! — non indovinerai mai che cosa è successo!

I guessed as much! — lo sospettavo!

guess what! I've won a prize! — indovina (un po')! Ho vinto un premio!

guess who! — indovina chi!

I guess so, not — credo di sì, di no

to guess right, wrong — indovinare, non indovinare

you'll never guess what has happened! — non indovinerai mai che cosa è successo!

I guessed as much! — lo sospettavo!

guess what! I've won a prize! — indovina (un po')! Ho vinto un premio!

guess who! — indovina chi!

I guess so, not — credo di sì, di no

to guess right, wrong — indovinare, non indovinare

It was just a guess. — Это было только предположение.

Your guess is right (wrong). — Ваше предположение правильно (неправильно).

You can guess the rest. — Об остальном нетрудно догадаться.

Guess what I have in my right hand. — Угадай, что у меня в правой руке