ADJ. fat, thick | self-addressed, stamped addressed Please enclose a stamped addressed envelope if you would like a reply. | post-paid, pre-paid, reply-paid To apply, use the enclosed reply-paid envelope (no stamp needed). | padded | airmail | brown, buff, manila, plain, white an official-looking manila envelope
VERB + ENVELOPE open, rip open, slit open, steam open, tear open The letter was suspicious, and I considered steaming open the envelope. | address, mark an envelope addressed in my mother's round handwriting The envelope was marked ‘Personal’. | seal
ENVELOPE + VERB contain sth
PREP. in an/the ~ I had put the letter in the wrong envelope. | into an/the ~ He quickly stuffed the money back into the envelope. | on an/the ~ I couldn't read the address on the envelope. | ~ of He gave her the envelope of certificates.
PHRASES the back of an envelope I scribbled his phone number on the back of an envelope.