Significados de rather enigmatic en inglés

In the letter there was a sentence which was rather enigmatic:

This is not the stern, rather enigmatic man of my memory.

Persis listened unmoved, her rather enigmatic smile suggesting that she clearly foresaw a way out of that difficulty.

"I told you the truth; and until to-night I have never thought much about going back," was Blount's rather enigmatic reply.

"Not as much as some people might think." He wouldn't elaborate on that rather enigmatic remark, however, nor did he return to the topic.