Generally not gradable; comparative and superlative forms are archaic or non-standard.
Переводы
The chief reason for the delay was the weather.
Главной причиной задержки была погода.
The chief concern of the committee is safety.
Основной заботой комитета является безопасность.
Определения
The chief reason for the meeting was to discuss the budget.
Причастие прошедшего времени
Slang usage meaning ‘to smoke (especially marijuana)’; chiefly North American.
Определения
Slang: to smoke (a cigar, cigarette, or marijuana), often continuously or greedily. They were chiefing blunts on the porch all night.