BE WILLING &c. adj.; incline, lean to, mind, propend [rare], had as lief, would as lief; lend -, give -, turn- a willing ear; have -a, - half a, - a great- mind to; hold to, cling to; desire [See Desire]. ACQUIESCE (assent) [See Assent]; see -, think- -good, - fit, - proper; comply with [See Consent].
swallow -, nibble at- the bait; swallow bait, hook, and sinker; swallow bait and all; gorge the hook; have -, make- no scruple of; make no bones of [colloq.]; jump at, catch at; go in for, go in at [both colloq.]; take up, plunge into, have a go at [colloq.]; meet halfway.
VOLUNTEER, offer, proffer; offer oneself [See Offer].
WILLINGLY &c. adj.; fain, freely, as lief, heart and soul; with pleasure, with all ones heart, with open arms; with good will, with right good will; de bonne volonté [F.], ex animo [L.], con amore [It.], heart in hand, nothing loath, without reluctance, of ones own accord, graciously, with a good grace; without demur. à la bonne heure [F.]; by all means, by all manner of means; to ones hearts content; yes (assent) [See Assent].
INTERJECTION:
SURELY! sure! with pleasure! of course! delighted!