abbreviation

TMB

tee-em-BEE

TMB (abbreviation) means Text me back, used at the end of a message to ask for a reply. Example: “Heading out in an hour, tmb if you want a lift.”

abbreviation

internet slang Text me back, used at the end of a message to ask for a reply.

"Heading out in an hour, tmb if you want a lift."

medical In oncology, tumour mutational burden: the number of mutations in a tumour's DNA, used to predict how well a cancer may respond to immunotherapy.

"High TMB is one marker used when selecting patients for checkpoint inhibitors."

hiking Tour du Mont Blanc, a long-distance hiking circuit through France, Italy and Switzerland.

"We walked the TMB anticlockwise over eleven days."

How to Use TMB

Learner’s notes

In plain EnglishShort for "text me back".

When to use it

Lower case in casual messaging, upper case in medical and technical writing. Never use the texting sense in professional correspondence.

Memory tip

Context settles which TMB you are reading: in a chat it is "text me back", in a clinical paper it is tumour mutational burden.

Trace the full origin ↓

Easily confused with

HMU → TTYL → TMI →

Common pairings

tmb when you can high TMB TMB score

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Test yourself on “TMB” A quick quiz — meaning, synonyms & usage →

Fill the Gap

Can you complete this real example?

Heading out in an hour, _____ if you want a lift.

Etymology

An initialism, standing for different phrases in different fields.

Origin: English

Synonyms

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TMB hmu reply

Related Words

answer response reaction reply respond react answering HMU

Frequently Asked Questions

What does TMB mean in texting?

It stands for "text me back". It is a direct request for a reply, softer than demanding one but more insistent than leaving the message open-ended.

What is the difference between TMB and HMU?

TMB ("text me back") asks the person to respond to the message you just sent. HMU ("hit me up") is broader — it invites them to contact you at some point, by any means, often about making plans.

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Vocabulary lists that include TMB:

Words That End With B

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