His actions were unpremeditated.
From the question it sounds as if the questioner is referring to; UNPREMEDITATED HOMICIDE OF A SPOUSE OR DOMESTIC PARTNER.
Offhand is the odd term because it has nothing to do with unplanned actions.
'Unpremeditated' means 'not planned'. In the case of Sean Taylor, we hear that some individuals have been charged with unpremiditated murder, ostensibly that there was a burglary that was planned, but a murder that was not planned.
Randomly comes from the base word random. Synonyms of random include accidental, aimless, casual, design-less, unaimed, unconsidered, unplanned, and unpremeditated.
There can be no such thing as attempted man slaughter. Manslaughter is the death of a person as a result of an unpremeditated act of negligence carelessness etc. as soon as there is a conscious attempt to kill it is attempted murder.
haphazard, chance (adj.), accidental, adventitious, aimless, arbitrary, casual, designless, fluky, fortuitous, incidental, indiscriminate, irregular, objectless, odd, purposeless, slapdash, unaimed, unconsidered, unplanned, unpremeditated
Its a minor battle in war, as one between small forces or between large forces avoiding direct conflict.
There are several synonyms or near-synonyms: ACCIDENT (noun)/ ACCIDENTAL (adjective)/ ACCIDENTALLY (adverb) UNINTENTIONAL (adjective) / UNINTENTIONALLY (adverb) INADVERTENT (adjective) / INADVERTENTLY (adverb) UNPREMEDITATED (adjective meaning unplanned, usually a legal term)
unintentionally, by mistake, unwittingly, unexpectedly
Definition is the same as meaning.
stipulative definition is stipulative definition