rapable adj.

late 14c., rapen, "seize prey; abduct, take and carry off by force," from rape (n.) and from Anglo-French raper (Old French rapir) "to seize, abduct," a legal term, probably from Latin rapere "seize, carry off by force, abduct" (see rapid). Also figuring in alliterative or rhyming phrases, such as rape and renne (late 14c.) "seize and plunder."

The older senses of the English word became obsolete. The surviving meaning "to abduct (a woman), ravish;" also "seduce (a man)" is clearly by early 15c. in English, but it might have been at least part of the sense in earlier uses.

Meaning "to rob, strip, plunder" (a place) is from 1721, a partial revival of the old sense. Uncertain connection to Low German and Dutch rapen in the same sense. In Middle English, and occasionally after, the verb was used in figurative senses of Latin rapere, such as "transport in ecstasy, carry off to heaven," usually in past-participle rapte, which tends to blend with rapt. Related: Raped; raping.

Classical Latin rapere was used for "sexually violate," but only rarely; the usual Latin word being stuprare "to defile, ravish, violate," which is related to stuprum (n.) "illicit sexual intercourse," literally "disgrace," stupere "to be stunned, stupefied" (see stupid). Latin raptus, past participle of rapere, used as a noun meant "a seizure, plundering, abduction," but in Medieval Latin also "forcible violation." 

common termination and word-forming element of English adjectives (typically based on verbs) and generally adding a notion of "capable of; allowed; worthy of; requiring; to be ______ed," sometimes "full of, causing," from French -able and directly from Latin -abilis. It is properly -ble, from Latin -bilis (the vowel being generally from the stem ending of the verb being suffixed), and it represents PIE *-tro-, a suffix used to form nouns of instrument, cognate with the second syllables of English rudder and saddle (n.).

A living element in English, used in new formations from either Latin or native words (readable, bearable) and also with nouns (objectionable, peaceable). Sometimes with an active signification (suitable, capable), sometimes of neutral signification (durable, conformable). It has become very elastic in meaning, as in a reliable witness, a playable foul ball, perishable goods. A 17c. writer has cadaverable "mortal."

To take a single example in detail, no-one but a competent philologist can tell whether reasonable comes from the verb or the noun reason, nor whether its original sense was that can be reasoned out, or that can reason, or that can be reasoned with, or that has reason, or that listens to reason, or that is consistent with reason; the ordinary man knows only that it can now mean any of these, & justifiably bases on these & similar facts a generous view of the termination's capabilities; credible meaning for him worthy of credence, why should not reliable & dependable mean worthy of reliance & dependence? [Fowler]

In Latin, -abilis and -ibilis depended on the inflectional vowel of the verb. Hence the variant form -ible in Old French, Spanish, English. In English, -able tends to be used with native (and other non-Latin) words, -ible with words of obvious Latin origin (but there are exceptions). The Latin suffix is not etymologically connected with able, but it long has been popularly associated with it, and this probably has contributed to its vigor as a living suffix.