そこはかとなく

adverb

somehow; vaguely; faintly

Describes something that is not clearly defined or expressed, often with a sense of subtlety or indefiniteness. Commonly used in literary or poetic contexts.

See also: そこはかとない

• 彼かれの言こと葉ばには、そこはかとなく寂さびしさが漂ただよっていた。

  There was a faint air of loneliness in his words.