Most tigerish is an expression used to describe someone as fierce, aggressive, or ruthless. However, there are several antonyms for this phrase that represent the opposite characteristics. Some of the antonyms for most tigerish include gentle, meek, mild, soft, and timid. A gentle person is kind, calm, and caring, whereas a meek person is submissive and unassertive. A mild person is tolerant, and a timid person is shy and lacking in confidence. These antonyms suggest a character that is amiable, yielding, and calm. Therefore, if you want to describe someone who is not aggressive, then you can use any of these antonyms to describe them.