surreptitious

As adjectives the difference between fraudulent and surreptitious

is that fraudulent is dishonest; based on fraud or deception while surreptitious is stealth]]y, furtive, [[hidden|well hidden, covert (especially movements).

As adjectives the difference between sneak and surreptitious

is that sneak is in advance; before release to the general public while surreptitious is stealthy, furtive, well hidden, covert (especially movements).

As a noun sneak

is one who sneaks; one who moves stealthily to acquire an item or information.

As a verb sneak

is to creep or go stealthily; to come or go while trying to avoid detection, as a person who does not wish to be seen.

As adjectives the difference between surreptitious and obvious

is that surreptitious is stealthy, furtive, well hidden, covert (especially movements) while obvious is easily discovered, seen, or understood; self-explanatory.

As adjectives the difference between surreptitious and suspicious

is that surreptitious is stealth]]y, furtive, [[hidden|well hidden, covert (especially movements) while suspicious is arousing suspicion.

As adjectives the difference between unobtrusive and surreptitious

is that unobtrusive is not noticeable or blatant; inconspicuous while surreptitious is stealthy, furtive, well hidden, covert (especially movements).

As adjectives the difference between obscure and surreptitious

is that obscure is dark, faint or indistinct while surreptitious is stealthy, furtive, well hidden, covert (especially movements).

As a verb obscure

is to render obscure; to darken; to make dim; to keep in the dark; to hide; to make less visible, intelligible, legible, glorious, beautiful, or illustrious.

As adjectives the difference between surreptitious and unseen

is that surreptitious is stealthy, furtive, well hidden, covert (especially movements) while unseen is not seen or discovered.

As a verb unseen is

past participle of lang=en.

As a noun unseen is

an examination involving material not previously seen or studied.

As adjectives the difference between surreptitious and specious

is that surreptitious is stealth]]y, furtive, [[hidden|well hidden, covert (especially movements) while specious is seemingly well-reasoned, plausible or true, but actually fallacious.

As adjectives the difference between surreptitious and serendipitous

is that surreptitious is stealthy, furtive, well hidden, covert (especially movements) while serendipitous is by serendipity; by unexpected good fortune.

As adjectives the difference between surreptitious and ironic

is that surreptitious is stealthy, furtive, well hidden, covert (especially movements) while ironic is characterized by or constituting (any kind of) irony.