The phrase "without strings" often signifies that something is free of any associated conditions or obligations. There are several synonyms that convey a similar meaning, including "unencumbered," "unattached," "uncommitted," and "unconditional." "Unencumbered" refers to something free of any hindrance, while "unattached" connotes a sense of detachment or disinterest. "Uncommitted" suggests that there is no obligation or responsibility attached to something, and "unconditional" emphasizes the lack of any requirements or restrictions. These synonyms can be used interchangeably to convey the idea that something is offered without any associated obligations or conditions.