Some synonyms of a keyword are listed in each of the following. Take one letter in turn from each of these synonyms to spell out a further synonym of the keyword.

(I) KEYWORD : tremendous
    SYNONYMS: great,terrific, monstrous, vast,enormous,gigantic, colossal

(II) KEYWORD : skillful
     SYNONYMS: able,adept,dextrous,proficient,accomplished, competent

(III) KEYWORD: proficient
     SYNONYMS: adept,expert,apt,skilled,competent,able, versed

(IV) KEYWORD: notable
     SYNONYMS: celebrated,famous,striking,renowned, rare,unusual,outstanding

(V) KEYWORD: rigid
    SYNONYMS: harsh,rigorous,stern,stringent,severe, strict, set