As an adjective unbelieving

is that does not believe; incredulous, skeptical.

As an adverb unbelievingly is

in an unbelieving way.

Unbelievingly is a synonym of disbelievingly.

As adverbs the difference between disbelievingly and unbelievingly

is that disbelievingly is in a disbelieving manner; in a manner that is difficult to believe while unbelievingly is in an unbelieving way.

As nouns the difference between migraine and triptan

is that migraine is (pathology) a severe, disabling headache, usually affecting only one side of the head, and often accompanied by nausea, vomiting, photophobia and visual disturbances while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

Almotriptan is a derived term of triptan.

As nouns the difference between almotriptan and triptan

is that almotriptan is a triptan drug for the treatment of migraine while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

Eletriptan is a derived term of triptan.

As nouns the difference between eletriptan and triptan

is that eletriptan is a triptan drug used to treat migraine while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

Frovatriptan is a derived term of triptan.

As a noun triptan is

any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

Naratriptan is a derived term of triptan.

As nouns the difference between naratriptan and triptan

is that naratriptan is a triptan drug, n-methyl-3-(1-methyl-4-piperidinyl)-1h-indole-5-ethanesulfonamide while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

As nouns the difference between tryptamine and triptan

is that tryptamine is a heterocyclic amine found in both plant and animal tissue, where it is an intermediate in several metabolic schemes while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

As nouns the difference between drug and triptan

is that drug is (pharmacology) a substance used to treat an illness, relieve a symptom, or modify a chemical process in the body for a specific purpose or drug can be (obsolete) a drudge while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

As a verb drug

is to administer intoxicating drugs to, generally without the recipient's knowledge or consent or drug can be (drag).

As nouns the difference between abortive and triptan

is that abortive is (obsolete) that which is born or brought forth prematurely; an abortion while triptan is any of a family of tryptamine-based drugs used as abortive medication in the treatment of migraine and cluster headaches.

As an adjective abortive

is (obsolete) produced by abortion; born prematurely .

As a verb abortive

is (obsolete) to cause an abortion; to render without fruit .