1) Be a robber 2) Be sticky-fingered 3) Do some lifting 4) Emulate thomas crown 5) Engage in pillaging 6) Exclusively Anglo word 7) Exclusively Saxon word 8) Filch 9) Glom 10) Hook 11) Knock off 12) Lift, so to speak 13) Misappropriate 14) Pilfer 15) Pinch 16) Pirate, so to speak 17) Rip off 18) Snitch Found on https://www.crosswordclues.com/clue/thieve
Thieve transitive verb & i. [ imperfect & past participle Thieved ; present participle & verbal noun Thieving .] [ Anglo-Saxon ge þeófian .] To practice theft; to steal. Found on http://www.encyclo.co.uk/webster/T/44