Accustom: Familiarize, habituate (अभ्यस्त करना/ आदी करना)
She had to accustom herself to eating later in the evening.
Adept: Skillful (कुशल)
Quite adept at repairing computers, he was often called for trouble-shooting even from other cities.
Deficient: Not having an adequate or proper supply or amount (कम/ अपूर्ण)
His theory is deficient in several respects.
Dubious: Doubtful (संदेहास्पद)
These claims are dubious and not scientifically proven.