high-ranking, prominent, senior, top
junior, minor
local, provincial, regional
public
administration, departmental, federal, government, state
a senior Bush administration official

full-time
full-time union officials

retired
elected
responsible
Report the incident to the responsible official.
the official responsible for handling the case

corrupt
bank, city, company, corporate, council, court, customs, health, intelligence, judicial, law enforcement (esp. AmE), military, ministry (esp. BrE), party, royal, union
the FBI and other law enforcement officials
his background as a union official

appoint (sb)
consult, consult with (esp. AmE), meet, meet with (esp. AmE)
She is due to meet with local officials to discuss possible relief projects.

bribe
He attempted to bribe local officials.

Official is used with these nouns:
acceptance, acknowledgement, agency, announcement, apology, appointment, approval, assurance, authorization, backing, banquet, biography, blessing, bulletin, business, campaign, capacity, celebration, censorship, censure, census, ceremony, channel, circle, clearance, comment, commission, communication, communiqué, complaint, condemnation, confirmation, correspondence, corruption, cover, currency, curriculum, declaration, definition, delegation, denial, dinner, disapproval, document, duty, endorsement, engagement, enquiry, estimate, exchange, explanation, figure, file, forecast, function, funding, guideline, historian, history, ideology, inauguration, index, journal, language, launch, letter, line, logo, magazine, media, meeting, mourning, mouthpiece, name, notification, opening, organization, paper, permission, photographer, policy, position, presentation, proclamation, propaganda, protest, publication, receiver, reception, recognition, recommendation, record, regulation, release, religion, report, representative, reprimand, request, residence, response, result, retirement, rhetoric, rule, sanction, secrecy, secret, site, source, sponsor, stamp, stance, standard, statement, statistics, story, strike, supplier, support, talk, teaching, title, tour, transcript, union, use, version, visit, warning, watchdog, website, welcome