Apt

Synonyms:
1. liable. 2. See likely. 3. clever, bright; adaptable; handy, adroit, dexterous, skillful. 4. fitting, meet, germane, felicitous. Apt, pertinent, relevant all refer to something suitable or fitting. Apt means to the point and particularly appropriate: an apt comment. Pertinent means pertaining to the matter in hand: a pertinent remark. Relevant means directly related to and important to the subject: a relevant opinion.

Usage note:
Some usage guides insist that apt followed by an infinitive can or should be used to mean only “inclined, disposed”: He is apt to ignore matters he regards as unimportant. In fact, apt is standard in all varieties of speech and writing as a synonym for likely in contexts that suggest probability without any implication of a natural disposition toward: Hostilities are apt to break out if the confrontation is not soon resolved. She is apt to arrive almost any time now. See also liable.