Atonic
adjective
Lacking energy or strength.
After the marathon, he was so atonic that he could barely stand.

Usage tips
Formal
adjective
Relating to the loss of normal muscle strength or tone.
The patient's atonic bladder caused frequent urination problems.

Usage tips
Formal
Technical
adjective
In linguistics, an atonic syllable or word doesn't have accent or stress.
In the word 'about', the 'a-' is atonic.

Usage tips
Formal
Academic
adjective
Lacking energy or strength.
After the marathon, he was so atonic that he could barely stand.

Usage tips
Formal
adjective
Relating to the loss of normal muscle strength or tone.
The patient's atonic bladder caused frequent urination problems.

Usage tips
Formal
Technical
adjective
In linguistics, an atonic syllable or word doesn't have accent or stress.
In the word 'about', the 'a-' is atonic.

Usage tips
Formal
Academic
Definition 1 of 3

Physical Weakness
Use 'atonic' to describe extreme tiredness, much more than just being sleepy or lazy.

He felt atonic after working three shifts back-to-back.
Emotional Nuance
'Atonic' can imply a sense of helplessness or inability to act due to lack of energy.

The news left her feeling suddenly atonic.
Not Commonly Used
'Atonic' is not a word you'll hear often; it's more specific and less common than 'tired'.

I only use 'atonic' for dramatic effect, like after running a marathon.
Physical Weakness
Use 'atonic' to describe extreme tiredness, much more than just being sleepy or lazy.

He felt atonic after working three shifts back-to-back.
Emotional Nuance
'Atonic' can imply a sense of helplessness or inability to act due to lack of energy.

The news left her feeling suddenly atonic.
Not Commonly Used
'Atonic' is not a word you'll hear often; it's more specific and less common than 'tired'.

I only use 'atonic' for dramatic effect, like after running a marathon.
Physical Weakness
Use 'atonic' to describe extreme tiredness, much more than just being sleepy or lazy.

He felt atonic after working three shifts back-to-back.
Emotional Nuance
'Atonic' can imply a sense of helplessness or inability to act due to lack of energy.

The news left her feeling suddenly atonic.
Not Commonly Used
'Atonic' is not a word you'll hear often; it's more specific and less common than 'tired'.

I only use 'atonic' for dramatic effect, like after running a marathon.
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