There was covert insinuation of suspicion, albeit a kindly one, in the man's voice.
He shot her a covert glance—causelessly, for her naiveté was flawless.
Mr. Bentham discreetly ignored the covert threat in Wrayson's words.
After skirting the covert, she turned homewards by a pathway through the trees.
Bertignac was suspected of a covert satire on the authorities.