have half a mind to do something Definition

half
noun halves

1a. One of two equal parts which together form a whole;

Thesaurus: bisection, division, fifty percent, half-share, hemisphere, fraction, portion, section.
1b. A quantity which equals such a part.

Example: half a bar of chocolate
2. The fraction equal to one divided by two (usually written ½).
3. colloq
A half pint, especially of beer.
(Scots)
4. A measure of spirits, especially whisky.
5. One of two equal periods of play in a match.
6. football, hockey etc.
The half of the pitch considered to belong to one team.
7. golf.
An equal score with an opponent.
8. A half-hour.
9. sport.
A halfback.
10. A half-price ticket, especially for a child.

adj

1. Forming or equal to half of something.

Example: a half chicken
Thesaurus: bisected, divided, fractional, halved; Antonym: all, full, whole.
2. Not perfect or complete.

Example: We don't want any half measures
Thesaurus: incomplete, limited, part, partial.

adverb

1. To the extent or amount of one half.

Example: half finished
2. Almost; partly; to some extent.

Example: half dead with exhaustion
3. Thirty minutes past the hour stated.

Example: half three

Idiom: a ... and a half

colloq
A very good ....
Example: She's a singer and a half

Idiom: by half

colloq
Excessively.
Example: He's too clever by half

Idiom: by halves

Without being thorough.
Example: They never do things by halves

Idiom: go halves (go halves on something)

To share the cost or expenses of something.
Example: let's go halves on a pizza

Idiom: have half a mind to do something

To have a strong desire to do it.

Idiom: how the other half lives

facetious
Other people's way of life, especially if they are richer or poorer.

Idiom: not half

Very.
Example: It isn't half cold

Not nearly.
Example: I'm not half fit enough

Yes, indeed.

Idiom: one's other half (one's better half)

colloq
One's husband, wife or partner.

Etymology: Anglo-Saxon healf.