Presumably, that the person in question, who is ruthless, sex-obsessed, and single-minded, belongs to the speaker of the phrase, in some sense.

As if someone were to describe their girlfriend: she's ruthless, sex-obsessed, singleminded, and (she's) all mine.

Cognizant's singleminded mission is to dedicate our business process and technology innovation know-how, our deep industry expertise and worldwide resources to working together with clients to make their businesses stronger.

Some words that mean the same thing are bent, decided, decisive, dogged, driven, firm, fixed, foregone, indomitable, intent, mulish, obstinate, persistent, pigheaded, resolute, serious, set, set on, settled, singleminded, stalwart, steadfast, steady, steeled, stiff, stubborn, tenacious, unbending, uncompromising, unflinching, unwavering, and unyielding.

This is what sounds like a simian line. this line is found in some cases of schizophrenia, as well as some heart problems etc. Usually this will cause the person to have singleminded focus to the point where relationships are difficult for them-because they have problems with feelings or closeness to others.

In most political science publications the primary purposes of the former Soviet Union were presented as a major hypothesis. For these writers, within the Soviet Union was a singleminded effort to pursue two related but not identical goals. The one was the continued objective of a small segment of leading communist leaders to maintain control of a widely diverse and large population that comprised the Soviet Union. The secondary purpose was to use this control to expand the political and military influence of the USSR in the world.These scholars maintain that contrary to popular belief the latter was not a planned endeavor but a step by step progression based on historical events.As an example of the latter rational, the victory of an unplanned Second World War, enabled Soviet leaders to expand the power of their nation.